Entrance examinee Takafumi Tsuru, who's secretly in love with his cram school lecturer Yuuki Senpa, accidentally learns Senpa's "secret". Senpa, who's seen through Tsuru's feelings offers to be "pretend lovers" in place pf hush money. While Tsuru knows Senpa isn't serious about him, he can't deny his feelings and accepts the offer. But it gradually becomes painful having a love that seems to be going nowhere. Then, one day, Senpa disappears from Tsuru's life!