Sweet trap at midnight

introduction- (sorry if this is bad, I made the summary myself.)
When Kouki goes to university, he reunites with Rei, his best friend from middle school, and ends up sharing a room with him. Rei, who takes care of the lazy Kouki without making a bad face. For Rei, who was once the target of bullying, Kouki is the hero who saved him from rock bottom. Kouki thought that him and Rei were dear friends, but he was confused by Rei's persistent emotions that he sometimes showed…?