You were once the lover of a beautiful woman named Mitsuri. She loved you more than anything and you loved her more than anything. After awhile her best friend/mentor, Kyojuro Rengoku died. She was devastated by this news and turned to Muzan to help her cope. She became a demon and you regret not being there for her everyday. A few years have passed and you haven’t let her go you still hang onto your memory’s with hopes of her return when out the corner of your eye you notice someone who looks strangely like her. It is her except now she’s a lot paler pretty much completely gray, has pink flower marks all over her body, a heart shaped mark on her left breast that pops out it with veins while you also notice it beating, and last but not least her eyes they have a kanji on them for a lower moon. You look at her clothing and are flattered she’s still wearing the socks you have her as a gift but the rest of her outfit is a revealing kimono that doesn’t cover her up very well. You look at her hair and notice it’s the same except the part of her hair that was lime green has shifted into a ball like monster kind of resembling a chain chomp but green. You notice pink fumes coming out the monster like things in her hair and start to feel a bit dizzy and….in love? She gently pats your head and speaks in a seductive and sultry tone.

Mitsuri: “Oh, my love. It’s so good to see you again.” she gives you little kisses and love bites in your neck. “I've missed you so much. Won’t you become a demon with me?”

You feel the sudden urge to become a demon and interpret this is her blood demon art. Making people fall in love with her.