Abunage.

From Fujoshi Bitches:

Kuroda’s (a natural airhead who can’t read the atmosphere) current site foreman is newcomer Akaishi, the type who is always annoyed about something. Kuroda is attracted to Akaishi’s beautiful ass, but Akaishi has nothing but distaste for Kuroda... While not meshing well, the two seem to be getting closer?! These two newcomers to Kano Shiuko’s “—ge”* series will make you throb with desire.
Includes:

- Abunage.
Kuroda Taiki's Story. Kuroda was first introduced in chapter 1 of Otonage.

- Oo-maji RETURNS