Asatte ni Kiss
Spin-off: Fukigen na Kimi to Kimagure na Kiss
Hakuri
Kowamote no Rinjin ga Ω datta Toki no Taishohou
straightforward sporty type x tatood scary senpai
Ochikobore Alpha to Elite Omega
Hoping for extra chapters (if there's any) Easily bored rebel Alpha student met the persistent elite (hidden Omega) teacher. The teacher was about to be promoted into headmaster if he manage to let the rebel (son of school's sponsor) attend and graduate highschool, which is the worst student from among the school history of successful Alpha prodigy graduates. The teacher is the son of headmaster (who owns the school?) since the name was after them, from Alpha family. The student was from a prestigious Alpha famous company, he's famous from the rumours of having a violent night life and easily bored since his 2 older brothers will inherit the company so he sees no purpose to study. The teacher was a hard worker who do everything to look perfect as someone comes from elite Alpha family (trying to live up to his family's expectations) so he'll do everything to make the student graduate even if his secret was found out and was subjected to the rebel's harassment. It turns out that the rebel only bored in life because no one take interest in him until sensei does and sensei also wanted someone to accept him as an Omega.
Yukyu omega