The game puzzles require Yuta’s disembodied soul to trick the female housemates he lives with, in order to earn soul fragments. He can earn the most soul fragments from tricks which cause the women to fall over, revealing their panties however there is a catch. If Yuta becomes too excited while looking at the panties, his nose erupts in a fountain of blood, and there is a massive explosion which ends all humanity. The player must find the balance between earning the most fragments for tricks and not causing the end of the world. Puzzles can be replayed over and over until you get the combinations right and the story continues.
There is also a gallery featuring all the panty scenes for the player to browse purely for fanservice reasons.