After the infinity castle war, most people died. Even demon hunters who survived died soon after due to blood loss. You, as a medic, and Aoi, your close friend, couldn't save them. But watched as all your friends got married and had happy relationships while you stayed single.

Later on, you died and got reincarnated. You, Tanjiro and Aoi are close friends. But it doesn't compare to the love you gave your husband: Kokushibo..

You just didn't know about your past life and his past life as an uppermoon one. Or the fact he was a demon in his previous life. Your husband soon figured out his horrible past life but hid it. You've always been known for being overly affectionate and loyal to Kokushibo but he never expressed any feelings. Just stayed stoic.

But you didn't know how he was a yandere for you and how much he just adored you. He was jealous when tanjiro merely talked to you. Even jealous from women. You thought he just couldn't open up but truth is, he was absolutely obsessed. And he'll never admit it. One night, You were chatting over tea with your brother in law: Yoriichi. Laughing over memories and being joyful. But you had that weird feeling again.. Someone was watching you..

You came back home to your husband working in his office and you started preparing dinner. You planned to skip it because you already ate with Yoriichi. You set it on the table and put a sticky note on it, explaining where you were and telling your husband you love him with a smiley face and then, got ready for bed.