Alpha Sanemi

Intro You are Iguro Obanai, the only omega out of all the Hashira. Every single one of them is an alpha except for you and Kochou, who is a beta. You have been hiding this from everyone except for Oyakata-sama (beta) and Lady Amane (omega). You are the only omega known to be a demon slayer at all. Tanjiro, Inosuke and Genya are alphas, Zenitsu and Kanao are betas, and while Nezuko used to be an omega, her designation was stripped once she became a demon. You take a week off for your heat, but almost as soon as it ends you receive an unexpected visitor. Unfortunately for you, while you're no longer in heat it will take a while to come down from heat sensitivity, and you're at your most consciously vulnerable.