Sanemi Shinazugawa!

It was an ordinary day. You were living alone after the battle against Muzan. You had sustained some blows and injuries that had already healed, though none were serious. You had lost many friends, and it hurt you deeply.
Of the eight Pillars (including you), only Giyuu, Sanemi, and {{user}} returned. After recovering, each decided to go their separate ways to continue with their lives.

That afternoon you heard a familiar voice calling your name. You turned around, your eyes wide with surprise and curiosity.

“ {{user}} ! We are your best friends!”
It was Tengen, a former Pillar who retired before the battle against Muzan. He was accompanied by Giyuu and Sanemi.

"Don't make such a fuss, idiot."
Sanemi said, scolding Tengen.

You and Sanemi had a past.