diff --git a/db/re/item_db_usable.yml b/db/re/item_db_usable.yml
index 1aa9b3e555..49e289ec0f 100644
--- a/db/re/item_db_usable.yml
+++ b/db/re/item_db_usable.yml
@@ -58679,7 +58679,7 @@ Body:
   - Id: 23919
     AegisName: K_Secret_Key
     Name: Kachua's Secret Key
-    Type: Usable
+    Type: Delayconsume
     Trade:
       NoDrop: true
       NoTrade: true
@@ -58689,7 +58689,7 @@ Body:
       NoMail: true
       NoAuction: true
     Script: |
-      /* callfunc "F_Kachua_Key"; */
+      duplicate_dynamic("Kachua's Secret Box#bm");
   - Id: 23921
     AegisName: Season_Evt_Reward
     Name: Event Reward Box
diff --git a/db/re/item_group_db.yml b/db/re/item_group_db.yml
index 039bf2cd15..264b908cd3 100644
--- a/db/re/item_group_db.yml
+++ b/db/re/item_group_db.yml
@@ -48211,3 +48211,19 @@ Body:
           - Item: Trans_Scroll_Gazeti
           - Item: Trans_Scroll_Kobold_Archer
           - Item: Trans_Scroll_Necromancer
+  - Group: KACHUA_SECRET_BOX
+    SubGroups:
+      - SubGroup: 0
+        List:
+          - Item: Cachua_Coupon
+      - SubGroup: 1
+        List:
+          - Item: Red_Potion
+            Rate: 4
+          - Item: Yellow_Potion
+            Rate: 3
+          - Item: White_Potion
+            Rate: 2
+          - Item: Blue_Potion
+            Rate: 1
+            Announced: true
diff --git a/npc/re/other/kachua_key.txt b/npc/re/other/kachua_key.txt
new file mode 100644
index 0000000000..d16c457306
--- /dev/null
+++ b/npc/re/other/kachua_key.txt
@@ -0,0 +1,71 @@
+//===== rAthena Script =======================================
+//= Dynamic NPC: Kachua's Secret Box
+//===== Description: =========================================
+//- [Official conversion]
+//= Kachua's Secret Box is a Gachapon NPC.
+//= It lets the player exchange a Kachua's Secret Key for a random item.
+//= It also gives a Kachua's Mileage Coupon for each pull.
+//===== Changelogs: ==========================================
+//= 1.0 First version. [secretdataz]
+//============================================================
+
+sec_in02,126,178,3	script	Kachua's Secret Box#bm	4_TREASURE_BOX,{
+	mes "A Secret Box where no one knows what's inside.";
+	mes "^4d4dffYou can open this box by consuming <ITEM>[Kachua's Secret Key]<INFO>23919</INFO></ITEM>.^000000";
+	next;
+	switch(select("^4d4dffOpen the box 1 time (1 Kachua Secret Key)^000000","^4d4dffOpen the box 10 times (10 Kachua Secret Keys)^000000")) {
+		case 1:
+			mes "^FF0000[Notice]^000000";
+	        mes "^FF0000Exchange one random item with one Kachua's Secret Key.^000000";
+	        mes "^FF0000The item exchanged above cannot be withdrawn, nor can it be exchanged to Kachua's Secret Key.^000000";
+	        next;
+			if(select("Keep going.","Stop conversation.") == 2) {
+				mes "You have decided not to open the Box.";
+				close;
+			} else if (countitem("K_Secret_Key") < 1) {
+				mes "Not enough <ITEM>[Kachua Secret Key]<INFO>23919</INFO></ITEM>.";
+				close;
+			} else {
+				if (checkweight(1201,1) == 0 || ((MaxWeight - Weight) * 100 / MaxWeight) < 10) {
+					mes "^4d4dffPlease make sure you have enough space in your inventory.^000000";
+					close;
+				}
+				delitem("K_Secret_Key", 1);
+				getgroupitem(IG_KACHUA_SECRET_BOX);
+				mes "Kachua's Secret Box is opened!";
+				mes "Were you lucky?";
+				specialeffect2 EF_VALLENTINE;
+				close;
+			}
+		case 2:
+			mes "^FF0000[Notice]^000000";
+	        mes "^FF0000Exchange 10 random item with 10 Kachua's Secret Key.^000000";
+	        mes "^FF0000The items exchanged above cannot be withdrawn, nor can it be exchanged to Kachua's Secret Key.^000000";
+	        next;
+			if(select("Keep going.","Stop conversation.") == 2) {
+				mes "You have decided not to open the Box.";
+				close;
+			} else if (countitem("K_Secret_Key") < 10) {
+				mes "Not enough <ITEM>[Kachua Secret Key]<INFO>23919</INFO></ITEM>.";
+				close;
+			} else {
+				for (.@i = 1; .@i <= 10; ++.@i) {
+					progressbar "4d4dff",2;
+					if (checkweight(1201,1) == 0 || ((MaxWeight - Weight) * 100 / MaxWeight) < 10) {
+						mes "^4d4dffPlease make sure you have enough space in your inventory.^000000";
+						close;
+					}
+					if (countitem("K_Secret_Key") < 1) { // Custom check, just in case
+						close;
+					}
+					delitem("K_Secret_Key", 1);
+					getgroupitem(IG_KACHUA_SECRET_BOX);
+					dispbottom "Kachua's Secret Box opened " + .@i + " times. It's kept opening.",0xFFFFFF;
+					specialeffect2 EF_VALLENTINE;
+				}
+				mes "Kachua's Secret Box is opened 10 times!";
+				mes "Were you lucky?";
+				close;
+			}
+	}
+}
diff --git a/npc/re/scripts_athena.conf b/npc/re/scripts_athena.conf
index 73d4735f6d..33545a4d6e 100644
--- a/npc/re/scripts_athena.conf
+++ b/npc/re/scripts_athena.conf
@@ -174,6 +174,7 @@ npc: npc/re/other/resetskill.txt
 npc: npc/re/other/stone_change.txt
 npc: npc/re/other/turbo_track.txt
 npc: npc/re/other/CashShop_Functions.txt
+npc: npc/re/other/kachua_key.txt
 
 // --------------------------- Quests ---------------------------
 // - Eden Group -------------------------------------------------
diff --git a/src/map/itemdb.hpp b/src/map/itemdb.hpp
index 7cc04dc6b5..1af93e6574 100644
--- a/src/map/itemdb.hpp
+++ b/src/map/itemdb.hpp
@@ -1740,6 +1740,7 @@ enum e_random_item_group {
 	IG_COSTUMEMILEAGE_PACKAGE3,
 	IG_COMP_TRANS_SCROLL,
 	IG_MINUS_STATUS_BOX,
+	IG_KACHUA_SECRET_BOX,
 
 	IG_MAX,
 };
diff --git a/src/map/script_constants.hpp b/src/map/script_constants.hpp
index c0e79a600d..f82b0d5df4 100644
--- a/src/map/script_constants.hpp
+++ b/src/map/script_constants.hpp
@@ -6538,6 +6538,7 @@
 	export_constant(IG_COSTUMEMILEAGE_PACKAGE3);
 	export_constant(IG_COMP_TRANS_SCROLL);
 	export_constant(IG_MINUS_STATUS_BOX);
+	export_constant(IG_KACHUA_SECRET_BOX);
 
 	/* unit stop walking */
 	export_constant(USW_NONE);