Toubou Kinshi!

Summary

Tannai, who works in the PR Department at a soft drink company, met Okano, a co-worker, at a product promotion event and they quickly grew close. While his heart is fluttered by Okano's scent and body, he spend his days avoid thinking deeply about it as if he's running away from something. Until one day, led by alcohol, he finally laid a hand on Okano...?! (Source: Girls' Generation Scanlations)