PRED-836 The story of my wife's infidelity after she went back to university. (PRED-836)

My beloved wife, Yukine, has decided to re-enroll in university to obtain a qualification. Because she's attractive and popular with men, I can't help but feel anxious. A photo from a seminar drinking party shows her happily drinking with a younger, handsome man. But knowing Yukine, who's grown tired of playing around, I thought it was just a casual acquaintance... However, her return times became later and later each day, and her communication became less frequent. Could it be... with that sleazy guy? Drinking...