Mousouka, Koi o Suru. Inside a crowded train, Yuma took a peek at someone else’s cellphone. What was displayed was a passionate love story between two men…! Furthermore, the one reading was a male student! Yuma could not hide his surprise, but due to strange coincidences, he became closer to that student, Souta. Pushed by his delusions, Yuma gradually grows addicted to Souta…?!