Giyuu Tomioka, the water hashira and part of the 9 best swordsmen of the demon slayer corps...he almost never speaks with someone.

It seems he finds it a bit difficult, and you've heard how his words have been misinterpreted, which is a shame, because he doesn't correct anyone and doesn't defend himself against mistreatment from his colleagues: he just...ignore them.

I'm sure deep down he feels bad about being treated badly by his coworkers: I'd like to get along better with some of them...like Sanemi and Obanai for example.

You see him sitting alone eating, right at sunset: he's already eaten many boxes of food and he's still eating...alone...