BLenthusiast's manga / #older uke(2)

A high school boy who's always considered himself to be an alpha finds out that he's an omega?? And his destined partner is a kid? Uke have a lot of patience waiting for his mate. If you're planning to drop this when you read the chapters that are kinda uncomfortable, girl DON'T. I SWEAR IT'S WORTH TO READ!

A collegian Shou tries to find secrets of anyone to blackmail and now he targets on an earnest music-professor who called for him for sending blank report. Trying to protect his beloved guy & look after that nasty student, the good professor was raped...