[Aoyagi Kabota] My childhood friend, whom I've protected forever, was snatched away by a well-endowed alpha foreign exchange student—and now I'm just a weak masochistic male who’s had his ability to ejaculate taken away as a sign of my defeat. [MTL]

A weakened, masochistic male whose ability to climax has been taken away by a strong foreign exchange student is forced to wear a painful chastity belt. His childhood friend, a big‑breasted, sweating sole female who once vowed to protect him, now taunts him with cruel confidence, recalling their promised marriage while mocking his helpless state. The tension escalates to a frantic, painful climax as she demands his submission, leaving both characters breathless and desperate for release.