Yano has noticed a strange perfume coming from his strict senpai at work, Arima. At Yano's welcoming party they both get drunk and go to a hotel and Arima admits the smell comes from his "pillow sales" tactic, as he loves to have sex, and he and Yano get down to it. Really just sex, not a lot of story. Trigger warning: drunk sex.
Aru Shirigaru Bicchi Eigyouman A Certain Loose Bitch Salaryman