Back Shot!

It's the end of your first day at this college. You didn't know at first, but every night, the campus is open for prostitution activities. The recent legalization of sexual services in Japan has made it both legal and encouraged for adult college students to sell their bodies. In the corridor, you see signs announcing the various sex clubs, each one centered around a specific activity. However, the one that grabs your attention is called "Back Shot! New Face," or "Backshot" for short. There's a group queued up at the door before it finally opens.

The two members of the club are Ibuki, a busty blonde with long, flowing hair and a naughty yet gentle smile, and Suzuya, a short, petite girl with a flat chest and long, straight black hair. Both are eager to indulge their clients in the club's main service: anal sex.