diff --git a/reframework/autorun/MHR_Overlay/Damage_Meter/damage_hook.lua b/reframework/autorun/MHR_Overlay/Damage_Meter/damage_hook.lua
index 4897097..ee15059 100644
--- a/reframework/autorun/MHR_Overlay/Damage_Meter/damage_hook.lua
+++ b/reframework/autorun/MHR_Overlay/Damage_Meter/damage_hook.lua
@@ -50,6 +50,7 @@ local is_boss_enemy_method = enemy_character_base_type_def:get_method("get_isBos
 local check_die_method = enemy_character_base_type_def:get_method("checkDie");
 
 local stock_direct_marionette_finish_shoot_hit_parts_damage_method = enemy_character_base_type_def:get_method("stockDirectMarionetteFinishShootHitPartsDamage");
+local get_mystery_core_break_damage_rate_method = enemy_character_base_type_def:get_method("getMysteryCoreBreakDamageRate");
 
 local enemy_calc_damage_info_type_def = sdk.find_type_definition("snow.hit.EnemyCalcDamageInfo.AfterCalcInfo_DamageSide");
 local get_attacker_id_method = enemy_calc_damage_info_type_def:get_method("get_AttackerID");
@@ -69,7 +70,7 @@ local get_condition_type2_method = enemy_calc_damage_info_type_def:get_method("g
 local get_condition_damage3_method = enemy_calc_damage_info_type_def:get_method("get_ConditionDamage3");
 local get_condition_type3_method = enemy_calc_damage_info_type_def:get_method("get_ConditionDamageType3");
 
-local stock_mystery_core_break_damage_type_def = sdk.find_type_definition("snow.enemy.EnemyCharacterBase.stockMysteryCoreBreakDamage");
+local stock_mystery_core_break_damage_method = enemy_character_base_type_def:get_method("stockMysteryCoreBreakDamage");
 
 local quest_manager_type_def = sdk.find_type_definition("snow.QuestManager");
 
@@ -81,22 +82,22 @@ local is_from_host_field = packet_quest_forfeit_type_def:get_field("_IsFromQuest
 
 function this.get_damage_source_type(damage_source_type_id, is_marionette_attack)
 	if is_marionette_attack then
-		return "wyvern riding";
+		return players.damage_types.wyvern_riding;
 	elseif damage_source_type_id == 0 or damage_source_type_id == 7 or damage_source_type_id == 11 or damage_source_type_id == 13 then
-		return "player";
+		return players.damage_types.player;
 	elseif damage_source_type_id == 1 or damage_source_type_id == 8 then
-		return "bomb";
+		return players.damage_types.bombs;
 	elseif damage_source_type_id == 9 then
-		return "kunai";
+		return players.damage_types.kunai;
 	elseif damage_source_type_id >= 14 and damage_source_type_id <= 20 then
-		return "installation";
+		return players.damage_types.installations;
 	elseif damage_source_type_id >= 21 and damage_source_type_id <= 23 then
-		return "otomo";
+		return players.damage_types.otomo;
 	elseif damage_source_type_id >= 25 and damage_source_type_id <= 32 then
-		return "endemic life";
+		return players.damage_types.endemic_life;
 	end
 
-	return "other";
+	return players.damage_types.other;
 end
 
 -- snow.hit.EnemyCalcDamageInfo.AfterCalcInfo_DamageSide
@@ -226,12 +227,35 @@ function this.update_damage(enemy, enemy_calc_damage_info)
 
 	players.update_damage(players.total, damage_source_type, is_large_monster, damage_object);
 	players.update_damage(player, damage_source_type, is_large_monster, damage_object);
+
+	--[[xy = string.format(
+		
+			PhysicalPartsVitalDamage(): 		%s
+			PhysicalPartsBreakVitalDamage():	%s
+			PhysicalPartsLossVitalDamage():		%s
+			PhysicalMultiPartsVitalDamage():	%s
+
+			ElementPartsVitalDamage():			%s
+			ElementPartsBreakVitalDamage():		%s
+			ElementPartsLossVitalDamage():		%s
+			ElementMultiPartsVitalDamage():		%s
+
+			IsBreakPartsDamage():				%s
+		,
+		tostring(enemy_calc_damage_info:get_PhysicalPartsVitalDamage()),
+		tostring(enemy_calc_damage_info:get_PhysicalPartsBreakVitalDamage()),
+		tostring(enemy_calc_damage_info:get_PhysicalPartsLossVitalDamage()),
+		tostring(enemy_calc_damage_info:get_PhysicalMultiPartsVitalDamage()),
+
+		tostring(enemy_calc_damage_info:get_ElementPartsVitalDamage()),
+		tostring(enemy_calc_damage_info:get_ElementPartsBreakVitalDamage()),
+		tostring(enemy_calc_damage_info:get_ElementPartsLossVitalDamage()),
+		tostring(enemy_calc_damage_info:get_ElementMultiPartsVitalDamage()),
+
+		tostring(enemy_calc_damage_info:get_IsBreakPartsDamage())
+	);]]
 end
 
---function damage_hook.on_mystery_core_break(enemy)
-
---end
-
 function this.cart(dead_player_id, flag_cat_skill_insurance)
 	-- flag_cat_skill_insurance = 0
 	-- flag_cat_skill_insurance = 1
@@ -309,6 +333,28 @@ function this.on_stock_direct_marionette_finish_shoot_hit_parts_damage(enemy, da
 	players.update_damage(player, damage_source_type, true, large_monster_damage_object);
 end
 
+function this.on_mystery_core_break(enemy, part_id)
+	local monster = large_monster.get_monster(enemy);
+	if monster == nil then
+		return;
+	end
+
+	local mystery_core_break_damage_rate = get_mystery_core_break_damage_rate_method:call(enemy);
+	if mystery_core_break_damage_rate == nil then
+		return;
+	end
+
+	local mystery_core_break_damage = utils.math.round(mystery_core_break_damage_rate * monster.max_health);
+
+	local damage_object = {};
+	damage_object.total_damage = mystery_core_break_damage;
+	damage_object.physical_damage = 0;
+	damage_object.elemental_damage = 0;
+	damage_object.ailment_damage = mystery_core_break_damage;
+
+	players.update_damage(players.total, players.damage_types.mystery_core, true, damage_object);
+end
+
 function this.init_module()
 	quest_status = require("MHR_Overlay.Game_Handler.quest_status");
 	players = require("MHR_Overlay.Damage_Meter.players");
@@ -344,6 +390,20 @@ function this.init_module()
 		return retval;
 	end);
 
+	sdk.hook(stock_mystery_core_break_damage_method, function(args)
+		-- break core group is same as hit group?
+		-- break core group is part id which exploded
+		local enemy = sdk.to_managed_object(args[2]);
+		local break_core_group = sdk.to_int64(args[3]);
+		local hit_group = sdk.to_int64(args[4]);
+
+		this.on_mystery_core_break(enemy, hit_group);
+	end, function(retval)
+		return retval;
+	end);
+
+	--snow.enemy.EnemyCharacterBase.procDamageMystery(snow.hit.EnemyCalcDamageInfo.AfterCalcInfo_DamageSide)
+
 	--sdk.hook(stock_mystery_core_break_damage_type_def, function(args)
 	--	pcall(damage_hook.on_mystery_core_break, sdk.to_managed_object(args[2]));
 	--end, function(retval)
diff --git a/reframework/autorun/MHR_Overlay/Damage_Meter/players.lua b/reframework/autorun/MHR_Overlay/Damage_Meter/players.lua
index db82810..7f56abd 100644
--- a/reframework/autorun/MHR_Overlay/Damage_Meter/players.lua
+++ b/reframework/autorun/MHR_Overlay/Damage_Meter/players.lua
@@ -9,6 +9,7 @@ local quest_status;
 local drawing;
 local language;
 local non_players;
+local utils;
 
 local sdk = sdk;
 local tostring = tostring;
@@ -51,6 +52,22 @@ this.display_list = {};
 
 this.highlighted_damage_UI = nil;
 
+this.damage_types = {
+	["player"] = "player",
+	["bombs"] = "bombs",
+	["kunai"] = "kunai",
+	["installations"] = "installations",
+	["otomo"] = "otomo",
+	["wyvern_riding"] = "wyvern_riding",
+	["poison"] = "poison",
+	["otomo_poison"] = "otomo_poison",
+	["blast"] = "blast",
+	["otomo_blast"] = "otomo_blast",
+	["endemic_life"] = "endemic_life",
+	["mystery_core"] = "mystery_core",
+	["other"] = "other"
+};
+
 this.types = {
 	["myself"] = 0,
 	["other_player"] = 1,
@@ -60,8 +77,7 @@ this.types = {
 	["servant_otomo"] = 16,
 	["total"] = 32,
 	["highlight"] = 64
-
-}
+};
 
 function this.new(id, name, master_rank, hunter_rank, type)
 	local player = {};
@@ -78,7 +94,7 @@ function this.new(id, name, master_rank, hunter_rank, type)
 	player.first_hit_time = -1;
 	player.dps = 0;
 
-	player.small_monsters = this.init_damage_sources()
+	player.small_monsters = this.init_damage_sources();
 	player.large_monsters = this.init_damage_sources();
 	
 	player.display = {};
@@ -98,78 +114,15 @@ end
 
 function this.init_damage_sources()
 	local monster_type = {};
-
-	monster_type.total_damage = 0;
-	monster_type.physical_damage = 0;
-	monster_type.elemental_damage = 0;
-	monster_type.ailment_damage = 0;
-
-	monster_type.bombs = {};
-	monster_type.bombs.total_damage = 0;
-	monster_type.bombs.physical_damage = 0;
-	monster_type.bombs.elemental_damage = 0;
-	monster_type.bombs.ailment_damage = 0;
-
-	monster_type.kunai = {};
-	monster_type.kunai.total_damage = 0;
-	monster_type.kunai.physical_damage = 0;
-	monster_type.kunai.elemental_damage = 0;
-	monster_type.kunai.ailment_damage = 0;
-
-	monster_type.installations = {};
-	monster_type.installations.total_damage = 0;
-	monster_type.installations.physical_damage = 0;
-	monster_type.installations.elemental_damage = 0;
-	monster_type.installations.ailment_damage = 0;
-
-	monster_type.otomo = {};
-	monster_type.otomo.total_damage = 0;
-	monster_type.otomo.physical_damage = 0;
-	monster_type.otomo.elemental_damage = 0;
-	monster_type.otomo.ailment_damage = 0;
-
-	monster_type.wyvern_riding = {};
-	monster_type.wyvern_riding.total_damage = 0;
-	monster_type.wyvern_riding.physical_damage = 0;
-	monster_type.wyvern_riding.elemental_damage = 0;
-	monster_type.wyvern_riding.ailment_damage = 0;
-
-	monster_type.poison = {};
-	monster_type.poison.total_damage = 0;
-	monster_type.poison.physical_damage = 0;
-	monster_type.poison.elemental_damage = 0;
-	monster_type.poison.ailment_damage = 0;
-
-	monster_type.otomo_poison = {};
-	monster_type.otomo_poison.total_damage = 0;
-	monster_type.otomo_poison.physical_damage = 0;
-	monster_type.otomo_poison.elemental_damage = 0;
-	monster_type.otomo_poison.ailment_damage = 0;
-
-
-	monster_type.blast = {};
-	monster_type.blast.total_damage = 0;
-	monster_type.blast.physical_damage = 0;
-	monster_type.blast.elemental_damage = 0;
-	monster_type.blast.ailment_damage = 0;
-
-	monster_type.otomo_blast = {};
-	monster_type.otomo_blast.total_damage = 0;
-	monster_type.otomo_blast.physical_damage = 0;
-	monster_type.otomo_blast.elemental_damage = 0;
-	monster_type.otomo_blast.ailment_damage = 0;
-
-	monster_type.endemic_life = {};
-	monster_type.endemic_life.total_damage = 0;
-	monster_type.endemic_life.physical_damage = 0;
-	monster_type.endemic_life.elemental_damage = 0;
-	monster_type.endemic_life.ailment_damage = 0;
-
-	monster_type.other = {};
-	monster_type.other.total_damage = 0;
-	monster_type.other.physical_damage = 0;
-	monster_type.other.elemental_damage = 0;
-	monster_type.other.ailment_damage = 0;
+	
+	for damage_type_name, _ in pairs(this.damage_types) do
+		monster_type[damage_type_name] = {
+			total_damage = 0,
+			physical_damage = 0,
+			elemental_damage = 0,
+			ailment_damage = 0
+		};
+	end
 
 	return monster_type;
 end
@@ -191,37 +144,10 @@ function this.update_damage(player, damage_source_type, is_large_monster, damage
 		player.first_hit_time = time.total_elapsed_script_seconds;
 	end
 
-	local player_monster_type = player.small_monsters;
 	if is_large_monster then
-		player_monster_type = player.large_monsters;
-	end
-
-	if damage_source_type == "player" then
-		this.merge_damage(player_monster_type, damage_object);
-	elseif damage_source_type == "bomb" then
-		this.merge_damage(player_monster_type.bombs, damage_object);
-	elseif damage_source_type == "kunai" then
-		this.merge_damage(player_monster_type.kunai, damage_object);
-	elseif damage_source_type == "installation" then
-		this.merge_damage(player_monster_type.installations, damage_object);
-	elseif damage_source_type == "otomo" then
-		this.merge_damage(player_monster_type.otomo, damage_object);
-	elseif damage_source_type == "wyvern riding" then
-		this.merge_damage(player_monster_type.wyvern_riding, damage_object);
-	elseif damage_source_type == "poison" then
-		this.merge_damage(player_monster_type.poison, damage_object);
-	elseif damage_source_type == "blast" then
-		this.merge_damage(player_monster_type.blast, damage_object);
-	elseif damage_source_type == "otomo poison" then
-		this.merge_damage(player_monster_type.otomo_poison, damage_object);
-	elseif damage_source_type == "otomo blast" then
-		this.merge_damage(player_monster_type.otomo_blast, damage_object);
-	elseif damage_source_type == "endemic life" then
-		this.merge_damage(player_monster_type.endemic_life, damage_object);
-	elseif damage_source_type == "other" then
-		this.merge_damage(player_monster_type.other, damage_object);
+		this.merge_damage(player.large_monsters[damage_source_type], damage_object);
 	else
-		this.merge_damage(player_monster_type, damage_object);
+		this.merge_damage(player.small_monsters[damage_source_type], damage_object);
 	end
 
 	this.update_display(player);
@@ -251,7 +177,7 @@ function this.update_display(player)
 
 	for _, monster_type in ipairs(monster_types) do
 		if cached_config.tracked_damage_types.player_damage then
-			this.merge_damage(player.display, monster_type);
+			this.merge_damage(player.display, monster_type.player);
 		end
 
 		if cached_config.tracked_damage_types.bomb_damage then
@@ -390,6 +316,10 @@ function this.update_display(player)
 			this.merge_damage(player.display, monster_type.endemic_life);
 		end
 
+		if cached_config.tracked_damage_types.mystery_core_damage then
+			this.merge_damage(player.display, monster_type.mystery_core);
+		end
+
 		if cached_config.tracked_damage_types.other_damage then
 			this.merge_damage(player.display, monster_type.other);
 		end
@@ -702,6 +632,7 @@ function this.init_module()
 	drawing = require("MHR_Overlay.UI.drawing");
 	language = require("MHR_Overlay.Misc.language");
 	non_players = require("MHR_Overlay.Damage_Meter.non_players");
+	utils = require("MHR_Overlay.Misc.utils");
 
 	this.init();
 end
diff --git a/reframework/autorun/MHR_Overlay/Misc/config.lua b/reframework/autorun/MHR_Overlay/Misc/config.lua
index 89db256..9c9c7b4 100644
--- a/reframework/autorun/MHR_Overlay/Misc/config.lua
+++ b/reframework/autorun/MHR_Overlay/Misc/config.lua
@@ -5927,6 +5927,7 @@ function this.init_default()
 				poison_damage = true,
 				blast_damage = true,
 				endemic_life_damage = true,
+				mystery_core_damage = true,
 				other_damage = true -- note that installations during narwa fight are counted as other damage
 			},
 	
diff --git a/reframework/autorun/MHR_Overlay/Misc/language.lua b/reframework/autorun/MHR_Overlay/Misc/language.lua
index 5e87d84..4fcfed1 100644
--- a/reframework/autorun/MHR_Overlay/Misc/language.lua
+++ b/reframework/autorun/MHR_Overlay/Misc/language.lua
@@ -383,8 +383,12 @@ this.default_language = {
 		installation_damage = "Installation Damage",
 		otomo_damage = "Buddy Damage",
 		monster_damage = "Monster Damage",
+		wyvern_riding_damage = "Wyvern Riding Damage",
 		poison_damage = "Poison Damage",
 		blast_damage = "Blast Damage",
+		endemic_life_damage = "Endemic Life Damage",
+		mystery_core_damage = "Anomaly Core Damage",
+		other_damage = "Other Damage",
 
 		damage = "Damage",
 
@@ -466,10 +470,6 @@ this.default_language = {
 
 		master_rank = "Master Rank",
 
-		other_damage = "Other Damage",
-		wyvern_riding_damage = "Wyvern Riding Damage",
-		endemic_life_damage = "Endemic Life Damage",
-
 		hide_myself = "Hide Myself",
 		hide_other_players = "Hide Other Players",
 		hide_servants = "Hide Followers",
diff --git a/reframework/autorun/MHR_Overlay/Monsters/ailments.lua b/reframework/autorun/MHR_Overlay/Monsters/ailments.lua
index c50e7a7..5299aba 100644
--- a/reframework/autorun/MHR_Overlay/Monsters/ailments.lua
+++ b/reframework/autorun/MHR_Overlay/Monsters/ailments.lua
@@ -755,20 +755,20 @@ function this.apply_ailment_damage(monster, ailment_type, ailment_damage)
 		return;
 	end
 
-	local damage_source_type = "";
-	local otomo_damage_source_type = "";
+	local damage_source_type = players.damage_types.other;
+	local otomo_damage_source_type = players.damage_types.other;
 	local buildup_share = monster.ailments[ailment_type].buildup_share;
 	local otomo_buildup_share = monster.ailments[ailment_type].otomo_buildup_share;
 	
 	if ailment_type == this.poison_id then
-		damage_source_type = "poison";
-		otomo_damage_source_type = "otomo poison";
+		damage_source_type = players.damage_types.poison;
+		otomo_damage_source_type = players.damage_types.otomo_poison;
 		buildup_share = monster.ailments[ailment_type].cached_buildup_share;
 		otomo_buildup_share = monster.ailments[ailment_type].cached_otomo_buildup_share;
 		
 	elseif ailment_type == this.blast_id then
-		damage_source_type = "blast";
-		otomo_damage_source_type = "otomo blast";
+		damage_source_type = players.damage_types.blast;
+		otomo_damage_source_type = players.damage_types.otomo_blast;
 	else
 		return;
 	end
diff --git a/reframework/autorun/MHR_Overlay/UI/customization_menu.lua b/reframework/autorun/MHR_Overlay/UI/customization_menu.lua
index d0d617d..5bc61e0 100644
--- a/reframework/autorun/MHR_Overlay/UI/customization_menu.lua
+++ b/reframework/autorun/MHR_Overlay/UI/customization_menu.lua
@@ -1794,6 +1794,12 @@ function this.draw_damage_meter_UI()
 			config_changed = config_changed or changed;
 			damage_display_changed = damage_display_changed or changed;
 
+			changed, cached_config.tracked_damage_types.mystery_core_damage = imgui.checkbox(
+				language.current_language.customization_menu.mystery_core_damage, cached_config.tracked_damage_types.mystery_core_damage);
+
+			config_changed = config_changed or changed;
+			damage_display_changed = damage_display_changed or changed;
+
 			changed, cached_config.tracked_damage_types.other_damage = imgui.checkbox(
 				language.current_language.customization_menu.other_damage, cached_config.tracked_damage_types.other_damage);
 
diff --git a/reframework/data/MHR Overlay/languages/en-us.json b/reframework/data/MHR Overlay/languages/en-us.json
index d352b96..aca5225 100644
--- a/reframework/data/MHR Overlay/languages/en-us.json	
+++ b/reframework/data/MHR Overlay/languages/en-us.json	
@@ -211,6 +211,7 @@
         "my_damage_bar_location": "My Damage Bar Location",
         "my_otomos": "My Buddies",
         "myself": "Myself",
+        "mystery_core_damage": "Anomaly Core Damage",
         "name": "Name",
         "name_label": "Name Label",
         "new": "New",
@@ -223,7 +224,7 @@
         "other_damage": "Other Damage",
         "other_player_otomos": "Other Player Buddies",
         "other_players": "Other Players",
-        "otomo_damage": "Buddy Damage",
+        "otomo_damage": "Buddies Damage",
         "outline": "Outline",
         "outside": "Outside",
         "part_health": "Part Health",
diff --git a/reframework/data/MHR Overlay/languages/ja-jp.json b/reframework/data/MHR Overlay/languages/ja-jp.json
index 2dfe14a..032a637 100644
--- a/reframework/data/MHR Overlay/languages/ja-jp.json	
+++ b/reframework/data/MHR Overlay/languages/ja-jp.json	
@@ -211,6 +211,7 @@
         "my_damage_bar_location": "自身のダメージバーの場所",
         "my_otomos": "My Buddies",
         "myself": "Myself",
+        "mystery_core_damage": "Anomaly Core Damage",
         "name": "Name",
         "name_label": "Name Label",
         "new": "New",
diff --git a/reframework/data/MHR Overlay/languages/ko-kr.json b/reframework/data/MHR Overlay/languages/ko-kr.json
index 09d0d82..6af3dd6 100644
--- a/reframework/data/MHR Overlay/languages/ko-kr.json	
+++ b/reframework/data/MHR Overlay/languages/ko-kr.json	
@@ -211,6 +211,7 @@
         "my_damage_bar_location": "내 대미지 막대 위치",
         "my_otomos": "내 동반자",
         "myself": "나",
+        "mystery_core_damage": "Anomaly Core Damage",
         "name": "이름",
         "name_label": "이름 정보",
         "new": "새",
diff --git a/reframework/data/MHR Overlay/languages/ru-ru.json b/reframework/data/MHR Overlay/languages/ru-ru.json
index 48e144c..d2cf90d 100644
--- a/reframework/data/MHR Overlay/languages/ru-ru.json	
+++ b/reframework/data/MHR Overlay/languages/ru-ru.json	
@@ -211,6 +211,7 @@
         "my_damage_bar_location": "Позиция моей шкалы урона",
         "my_otomos": "Мои спутники",
         "myself": "Я",
+        "mystery_core_damage": "Anomaly Core Damage",
         "name": "Имя",
         "name_label": "Метка имени",
         "new": "Создать",
diff --git a/reframework/data/MHR Overlay/languages/zh-cn.json b/reframework/data/MHR Overlay/languages/zh-cn.json
index 5743f25..02dbd02 100644
--- a/reframework/data/MHR Overlay/languages/zh-cn.json	
+++ b/reframework/data/MHR Overlay/languages/zh-cn.json	
@@ -211,6 +211,7 @@
         "my_damage_bar_location": "我的伤害条位置",
         "my_otomos": "我的随从",
         "myself": "我自己",
+        "mystery_core_damage": "Anomaly Core Damage",
         "name": "名称",
         "name_label": "名字标签",
         "new": "新建",
diff --git a/reframework/data/MHR Overlay/languages/zh-tw.json b/reframework/data/MHR Overlay/languages/zh-tw.json
index 6c63f91..f2182a8 100644
--- a/reframework/data/MHR Overlay/languages/zh-tw.json	
+++ b/reframework/data/MHR Overlay/languages/zh-tw.json	
@@ -211,6 +211,7 @@
         "my_damage_bar_location": "我的傷害條",
         "my_otomos": "My Buddies",
         "myself": "Myself",
+        "mystery_core_damage": "Anomaly Core Damage",
         "name": "Name",
         "name_label": "Name Label",
         "new": "New",