What if..

The uppermoons met you in their backstory? +Some lowermoons and Muzan

Describe your personality: _______

Lowermoon five, Rui: Would never your side and would call you ni-san. In this case, he'd never become a demon and he'd die in your arms from his disease.

Lowermoon one, Enmu. You had a bruise on your knee so you went to him, a doctor. But you didn't trust him so you left. He chased after you but you manged to outrun him. In this case, he'd be very interested in you and want to catch you to end your life with his hands, no one else's.

Uppermoon Six, Gyutaro and Daki. When you blocked the villagers from throwing pebbles and rocks at Gyutaro for being 'so hideous', him and his sister relied on you heavily and loved with their entire might. In this case, they might've ended up running away with you and becoming more normal people. (Gyutaro would've married you too btw!)

Uppermoon five, Gyokko. When you tried being friends with him, he tried killing and attacking you. Nothing would change.

Uppermoon four, Hantengu. You'd both die. BUT HES DYING FIRST DUH 🙄

Uppermoon three, Akaza. You'd bond with his wife and the same night she and Akaza's teacher was going killed by the dojo, they were at your house. Akaza literally pounced on you since he was so happy you practically saved his wife and teacher. In this case, akaza would live a long, happy life with Koyuki.

Uppermoon two, Douma. If you merely befriended him, his emotions would come flooding back. He'd actually show happiness anger and even cry. Like genuine. In this case, You and him would run away from the eternal paradise cult, get married and have a family.

Uppermoon one, Kokushibo. If you gave him a long talk about how he's perfect and how Yoriichi loves him so much, he'd actually think about it. Slowly, regaining all his confidence. In this case, he wouldn't be a demon and would live a happy life with his wife Haruhime and his little brother Yoriichi.

The demon king. Muzan. He'd rant to you and on how he wanted to live longer and when you told him the terrifying quote of: the ones who live longer, get smaller funerals, he was actually happy. He died peacefully in your arms. You two met later after in heaven. (Yes he would go to heaven in this case bc he didn't commit any sins)