She can counteract these by befriending fellow students and maintaining a good reputation. If she acts suspiciously or does not clean up after her murders properly she will gain a 'guilty' point. In order to prevent detection Ryoba must plan her moves out carefully. Her path to love is not without obstacles, as ten rivals will stand in her way and a journalist is watching her every move, aware of her homicidal tendencies.
1980 modeġ980 mode centers upon Ryoba a teenage girl who has become obsessed with a popular male student named Jokichi. The player has the ability to kidnap, torture, poison, electrocute, matchmake, befriend, betray, and drown rivals, befriend other schoolgirls, play small mini games, access a street where the player can earn money by playing a maid cafe minigame, spend money at shops to buy different types of items, and more. Over the course of ten weeks, a different girl will fall in love with Taro, becoming a target for Ayano to eliminate. The player controls Ayano Aishi (nicknamed Yandere-chan), an apathetic Japanese high school girl who has developed a crush on Taro Yamada, a fellow student often referred to as ' Senpai'. Performing murder results in loss of sanity, making Yandere-chan look increasingly disturbed and unstable, with the game's graphics and background music also reflect the change. Yandere-chan (Ayano Aishi) with high sanity (above) and low sanity (below).