"You're really sexy, Aki-chan."

Miyazawa Aki is a serious and straightlaced salaryman who'd like to think of himself as "normal". After a chance encounter with Hiyama Eiji, a gay man, Aki ended up in a relationship with Eiji where he has to return the money he borrowed for taxi fare in the form of cigarette packs instead.

We're only kissing and holding each other in a sex-like manner because I have to return my debt. I'm "normal" after all...

Aki finds himself unable to refuse Eiji who with a gentle face, stubbornly makes his way into Aki's life. The guilt he feels about his past and the lies about his feelings towards Eiji and himself are coiling about just like the smoke from a cigarette...

What had first started from money now tenderly lights up the fire to their love and future together. This is the bittersweet and sensitive romance of two adults.