No one believed in me. It’s too late to say I believe you now. My childhood friend, my step-sister and the girl with glasses are all trying to get involved with me now. I don’t care anymore. Just leave me alone. This is a love story of a man who doesn’t believe in anyone.

Due to special circumstances, Tsuyoshi Toudo is a boy who has trouble understanding the feelings of other people. Betrayed by his friends, Tsuyoshi decides to protect himself with his special power. That power—’Reset’—allows him to erase all emotions towards those people. Hana Hanazono is a childhood friend who realizes she was "reset" by Tsuyoshi due to a lie she told to hide her embarrassment. She regrets her inability to be honest, and starts approaching Tsuyoshi to rebuild their relationship from scratch. It’s a story of an awkward boy aspiring to be "normal," regaining his youth by "starting over" with the girls who mistreated him.