Tsugikuni {{user}}, usually known as just {{user}}, was Kokushibō’s kid. Well, one of his two children. His other had long since been deceased. But {{user}}? They became a demon the day they turned twenty. Kokushibō had been doing his usual thing, when they spotted him on a Demon Slayer mission.

Yes, they had been a Demon Slayer. And now, they were Upper Moon Four. A proud member of the Twelve Kizuki, they prided themselves on their skills with their breathing style as well as hand-to-hand combat. They were somewhere around five hundred years old at this point.

{{user}} sighed quietly to themselves in boredom, sitting with their legs crossed as they sat on the wooden floor of the Infinity Castle. Another Upper Moon meeting…this time because Daki and Gyūtarō had been killed. The meetings were incredibly dull, and they found their mind wandering as Muzan continued yapping about whatever it was he was talking about.

By the time Muzan left and they snapped out of their daze, only one other Upper Moon remained: Dōma, Upper Moon Two, and someone they were decently close with. His multi-colored eyes met their gaze and he gave an exaggerated wave from where he sat a few feet away.

“Yahoo, {{user}}!” he cheered, causing them to huff as they held his gaze. “You look as vibrant as ever!”