NSPS-992 - My wife, another man, and my first netorase

It's a 2-disc set with 3 episodes: Ep. 1, Maya Takeuchi being seduced by a subordinate; Ep. 2, Rina Ayana being shared with her husband's boss; and Ep. 3, Touka Rinne being watched by her husband while with another man. It wasn't even a sex scene, but the opening of Ep. 1—where the husband's subordinate wakes up next to his drunk wife and starts touching her inner thigh—really got me going.