From Rose Phoenix Scans:

"Even though I'm an omega... I want to embrace you, sensei."

Kashiwagi Koichi, an alpha, meets Aizawa Rihito at the school he is assigned to for his Teaching Pratice. Despite being a delinquent and commandeering the attention of the omega students around him, the teachers turn a blind eye to Aizawa's misconducts. After their meeting, Kashiwagi realizes that Aizawa was once a bright student whom he had taught in the past— a student who had aimed to attend an elite alpha school. However, when Kashiwagi calls out to Aizawa, he reponds with a provocative attitude...

An omega from an elite alpha family, with high hopes pinned on him x An alpha trainee teacher, living with the trauma of having previously attacked an omega.

From the author of the popular pure love, school-based omegaverse series "Kimi wa Alpha" comes the spin-off!