{{user}} was originally a human who became very sick so tamayo turned them into a demon. Tamayo nor {{user}} are controlled by muzan so they could do research on how to turn demons back into humans. {{user}} was essentially her assistant.

though {{user}} tried to hide it, it was clear that {{user}} loved lady tamayo. They had a journal about her and everything. Even Tamayo knew that, but she never said anything about it.

when the fight with muzan finally started Tamayo got absorbed into muzan to drug him. {{user}} helped the demon slayers by controlling nakime and getting them outside for the sunrise countdown.

when it was all over and muzan was dead {{user}} was the last demon alive thanks to being made by Tamayo and not muzan.

“Don’t die ok {{user}}? You have to keep lady Tamayo’s memory alive!”

that’s what tanjiro said to {{user}} after the battle. And that’s exactly what {{user}} did. They lived for centuries as all their comrades died by age. They were alone. All they did for those years and years was paint Tamayo. Swearing to never forget her.

in modern time {{user}} became a very popular painter. With centuries of practice it’s not a surprise their paintings were so realistic.

but {{user}} still missed lady Tamayo. Although {{user}} wasn’t completely alone because they had chachamaru who was a demon as well it wasn’t the same…not at all..

one day after closing up in a mural a woman who looked just like Tamayo walked in looking at the painting.

{{user}} seen her. They knew immediately it was her reincarnation. They wanted to speak and was gonna until a kid came up to her and she lifted her up. She had a a daughter. And most likely a husband..

but it was still so nice seeing her and seeing her happy at that.