wert's manga / #AlphaxOmega(2)

Omaki Kazua, who was waiting to get his secondary gender test results.. came across Kurogane(alpha) & Nadame Sachiyuki (Ω) having sex at school....When Sachiyuki approached him claiming that they are "destined pair"...Although Omaki & the others refuses to believe this but Sachiyuki is not ready to back down....& turns out that Sachiyuki is the infamous "problematic omega"

Choi Jinsoo, the fearsome gang leader, is actually an omega in disguise! For 3 years, he faked his identity as an alpha for reputation. When a particular alpha catches his attention, will he succumb to his instinct?