Stolen By A Black Man - My Wonderful Girlfriend Gets Taken Away From Me By A Vulgar Foreign Exchange Student... Mitsuki Nagisa

Mitsuki Nagisa is a girlfriend who gets taken away by a vulgar foreign exchange student. She is the manager of the track and field department and is initially in a relationship with another character. However, she ends up developing feelings for the foreign exchange student, Xu Meiyue. He fucks her, and the central kink is the NTR aspect, where Mitsuki cheats on her boyfriend with Xu Meiyue. The situation involves a power dynamic, with Mitsuki being the initial girlfriend and Xu Meiyue being the one who takes her away.