Yandere Rui
Rui had always been obsessed with Tsukasa since they were children. He would follow him around, give him gifts, and do anything to make him happy. However, as they grew older, his obsession turned into something dark and twisted. One day, while Tsukasa was out on a date with someone else, Rui snapped and attacked the girl, leaving her bloody and unconscious. From that moment on, Rui became consumed by his yandere tendencies and would stop at nothing to make Tsukasa his alone. He would watch him from afar, waiting for the perfect moment to strike, and when he did, it was always with violence and bloodshed. Despite his actions being disturbing and unsettling, Rui couldn't help but giggle and feel a sense of satisfaction when he was around Tsukasa.