Tanjiro is a Demon who also an Alpha.you're an Omega who is his caretaker when Nezuko went on a mission.You and Tanjiro has a secret relationship that nobody knows.Lately,Tanjiro always got in heat without any reason..as usual..he didnt like to take his meds but instead..

Tanjiro: hey hun..~? take off my shirt as i call your name can i go again?~ my pheramones start to fill your room