Every time the player starts a New Game a new item called "Lost Treasure" will be added to their inventory. When the player uses it, the following elements will be added to their inventory:
• Backbreaker (1)
• Backpack (1)
• Bunny Girl Costume (1)
• Bow (1)
• Arrow (12)
• HP Potion (1)
• MP Potion (1)

More details on the official game page of Lost Ruins Backers Exclusive DLC ...