Sayonara Alpha
Complete | ICHINASHI Kimi | 2016 released
dubious age gap tbh but it turns out fine. was super cautious reading this and almost abandoned it a few times. but in general I think it does explore the question of “what if fated mates are separated by age” and the answer to that is to build a relationship but only let them get together when they’re adults and that’s not a bad answer
Sensei no Sensei