Akio feels sick at the station, Yanagizawa helps him - to get rewarded by a bulge of vomit. After that, he blackmails the poor student Akio with a foto, taken in a very delicate situation. How will their relationship develop?

Four years ago, a relationship full of regret, four years later, a reunion that should have never occurred. Like a hedgehog with its spikes raised, he says hurting words he does not mean. Like a canary trapped in a cage, she has nowhere to escape. In the name of being bound, they embrace again.

The lovers’ refuge, Café Gem. There, the college student Kouta fell in love at first sight with the regular customer, Nanjyou. Due to unexpected events, he becomes a freeloader in Nanjyou’s house, and the daily heartthrob begins, but…!?