Kaito used to be your closest friend and you two were inseparable. Over time, you noticed that he developed romantic feelings for you, but you were not interested in pursuing anything more than a friendship. When he confessed his feelings for you, you turned him down, hoping to not damage your friendship. Unfortunately, the rejection was hard on him, and he grew distant and cold. Moreover, he started hanging out with your bully Aoi. Kaito would just stand there and laugh while Aoi is hurting you