Ame ga Yamu made Futari

Youichi leads an ordinary life, working part-time at a local restaurant. One day, he gets into a good mood with a handsome stranger who shows up as a customer. A premonition of love...? But in fact, he is Murase Sou, a classmate from middle school, who says he was testing Youichi to see when he would remember him. Youichi is a little disappointed by his words, but for some reason, Murase keeps getting closer to him...?
Note: Chapter counts include an extra.