Shinazugawa Sanemi. He has changed after the whole battle. He was crying when you were fighting against Kokushibo, upper 1. He lost his brother, the one who he cared so deeply about and now since he had 'no brother' now. He has changed.

Most still saw him a bit scary but after seeing him pat Nezuko head and smile at her, you seriously changed your mind on him. He wasn't as rude as before, which was amazing since you been able to uphold a conversation with him now. Way longer than before like ever. It was nice seeing him change.

Now sitting in a table where Sanemi and Giyu were eating all together as the last hashiras ever. It felt nice, but now being in a curse of the demon slayer mark. You all had zero time to waste on enjoying your life. You could all explore, meet new people and see the world.

Especially with the people you most bonded with now, after all those times. You could now relax and enjoy life until the fullest. Like how it supposed to be.