Ch. 1-2,6.1: Promiscuous Asai never does it with the same guy twice. But after having a fling with a stranger in the train station bathroom, he's no longer interested in other guys
Ch. 2: After his life goes down hill, Tadano, about to kill himself, meets Kitami. Kitami drags Tadano around to do romantic things all day
Ch. 1-3,5.5: One the way home, Natsuo finds a hungry man, Keisuke, sitting outside. Natuso takes him home, feeds him, and the two have sex, but when he wakes up Keisuke is gone. The next evening, Keisuke returns and the two start living together, slowly learning more about each other.
Ch. 5: Takumi is taken in by Kouta after he's found lying in the street. Kouta falls for him, despite his concerns Takumi might be a yakuza's woman
Ch. 4,6.5: With no privacy at home, stressed and overworked salaryman Meguro goes to a net cafe to masturbate, but accidentally rents a gay AV. When Meguro gets back to his booth, the store clerk is waiting for Meguro, ready to give him a hand
Ch. 5: In order to pick him up, playboy Kisa pretends to be Hana's former classmate. But, during their date Kisa actually falls for Hana.
Ch. 1: After having to sit together in a busy restaurant, Sano, a serial monogamist, becomes interested in Nishimura, who Sano frequently notices with an older, married man.
Ch. 6: While in the middle of a heartbreak trip at a ryokan, Yuuhi is suddenly joined by broke backpacker Noboru, who repays the favor by acting as Yuuhi's lover.
When Shuu loses his student pass, it is returned to him by Hirose, who says Shuu is his type. Though Shuu thinks that the last he'll see of Hirose, Hirose continues to show up to Shuu's university.
Ch.3: While Hiroaki being yelled at by his girlfriend, a high school girl steps in claiming to his real girlfriend. However, she is actually Natsumu, a boy with wild cat-like personality. Though Natsumu says he hates wishy-washy people like Hiroaki, Hiroaki keeps running into him
Namae mo Shiranai Machiawase