Katsubou Anima Gemella

Hijiri Kaisei, an alpha, has issues getting close to omegas because he feels guilty over a traumatic incident from his past.
Then one day, his senpai tricked him into going to a male omega brothel.
While there, he meets Ryuji, a bitchy-maso boy, who is surprisingly different from the other omegas Kaisei met in the past.
Will this encounter throw Kaisei into an even darker abyss..?!



"The animal's burning desire"

(Source: Takeshobo, translated)