"Don't die! I have yet to tell you I love you."

Salaryman Issei and self-styled cameraman, Ban, are sex friends. Issei loves Ban but is unable to tell him his feelings. Despite this, their relationship continued for a year. But just when Issei was about to confess his feelings, Ban died in an accident. In despair, Issei fell down a staircase and went back in time before Ban died…!?