Day on campus

The protagonist "Makoto Ito" already has a sweetheart, and secretly keeps that girl's photo with him as the standby picture on his phone. She is "Gui Yanye" from the next class. She and Cheng had been passing by the same railway line and taking the tram at the same time, so Cheng gradually fell in love with her. Therefore, going to school and after school every day became Cheng’s only pleasure. But one day, Makoto's cell phone standby picture was seen by his deskmate "Saionji World". At this time, there is a popular saying in school, that is, if you keep your sweetheart's photo as the standby picture on your phone for 3 weeks without being seen by others, you can realize your dream (become a lover) and so on. Cheng secretly made this wish after hearing these words by chance. The love triangle surrounding the campus is about to begin.