This is 3D simulation game.

Player is role playing a "chikan"(Japanese word for pervert), the dark red person at the right corner. The setting of this game is inside a subway train. Player needs to hunt the right person before the train arrives the next stop. There will be hints appear on the top right corner (e.g. target's feature: glasses, red bra, facial hair, etc.). Player needs to be aware of other people while he/she is hunting. Player can get caught if he/she molests the wrong person. Both player and the target can be any sex with any appearance (male in female cloth). Even with the right features, the target might not be the right person and player needs to find the next target (reason: sexuality, player's appearance).

Player can gain game credits if he/she completed a task. Before the next task begins, player can use the credits to buy accessories(special power), clothes to upgrade his/her charisma.

There will be different endings depends on the player's action.