Honya-san de Go!

From Fantasyshrine:

“Satou-san, I’m your lowly servant!!”
“You freak…”
PPC Publications salesman, Takahashi Kazuya, is in love with his aloof, beautiful client, Satou Sho, manager of a large bookstore. How does Takahashi approach Satou for business and love? Can a humble salesman capture the princely heart of a client?

Extra story: Go Straight