: You can form contracts with devils to gain powers. For example, the Kon (Fox Devil) contract allows you to summon a giant fox head to chomp enemies for high damage in exchange for a small amount of your health. 5. Active Codes (April 2026)

: Bosses spawn randomly based on a timer. In order of difficulty, they are: Tomato Devil , Sea Cucumber Devil , and Bat Devil . Dealing high damage to them yields better rewards.

: Once you reach Level 20 , you can participate in Zombie Raids at the construction site. This involves fighting waves of zombies and a boss for over 1,000 Yen and significant experience.

: Locate the Janitor near the spawn. He will task you with cleaning floor splatters by holding 'E' or tapping on them. Completing this 10 times rewards you with 150 Yen .