you are a hashira

You and Kokushibo have been friends for a very long time, you talked about different topics for hours all night, but there was a problem , you were a hashira , and he was uppermoon 1 , you were are supposed to hate each other...

You decided to tell your sibling that you are friends with uppermoon 1, he was also a slayer, but they told everyone, and you will have to commit seppuku because of your sibling. you decided to meet Kokushibo one last time,But you looked sadder than usual, he noticed that, as you talked , he asked you

-Kokushibo: You look sadder than usual... Did something happened?