Saiji Ai (Mio Kudo) who is studying at Eichi University), met the beautiful woman Furuhashi Kotonoha (Osuki Maka) who was abandoned in the garbage dumpdecoration).Ai invited the elusive Kotonoha to her home, taking this as an opportunity to become friends with her, but this proposal was ruthlessly rejected, and Ai learned that Kotonoha's name was changed.

What Kotonoha suggested instead was to be “lovers” until he guessed her real name.Then,In the temporary relationship, if you guess her real name, you will become “friend” as agreed. This is a wonderful bet.Love did not retreat, so she decided to take this bet, and clumsily deepened her relationship with Kotonoha as a “lover”, but the past hidden in her name showed its fangs to the present...