From Fujoshi Bitches:

The stubborn tactics of obstinate men, the dishonest love that began with sex, all in all the romances of men who love to smoke. The hopeless desires that are bitter-sweet...

He's the man that taught me how to smoke and have sex with men... Hino and Kijima work for a detective agency. Two people who have an inseverable relationship, the truth is that they have even dated. However, unlike Kimjima who openly declares that he's gay, Hino, had a hard time admitting to a relationship with a man, so he said good bye to Kijima and married a woman. And now he's divorced.

And after all that's happened Kijima asks him out again, hasn't Kijima learned anything from past experiences...?

And thus begins the game of regret and pride. A collection of love stories connected by cigarettes.