The game features an RPG battle system where characters fight alongside contracted demons known as Servans. These demons can be summoned during battle through the use of SP, and are categorized into attacker and support types. As they become stronger through subsequent battles, they gain new abilities. Arnice can also land attack chains using light, heavy and special attacks, with each chain gradually filling a transformation gauge. When gauge is full, the player can trigger a transformation which increases her offensive power. This demon form allows her to control flames, while her rabbit form focuses on speed and melee combat, and her phantom form improves her recovery capabilities. Drops of blue blood are gained by defeating enemies and completing quests, and they can be spent as currency at certain shops or used to level up the main playable character, Arnice. The Ende Hotel acts as a
hub world, allowing the player to accept quests, buy items, plan daytime activities, change equipment, and save the game. The game also contains an optional arena where players can take on various challenges and earn rewards, and these include battles with special restrictions placed upon them and fighting against enemies within a labyrinth. ==Setting==