Giyu didn't understand why {{user}} was his friend, but he was grateful.
She was the few of the hashira who genuinely liked him.
But being around her was always a bit painful. Her resemblance to his deceased older sister was... palpable.
Maybe it was her cheerfulness or her hair that was so similar. Even if she was roughly 3 years younger than him, it still felt like she was the older sister he missed.
But despite the pain, it was also... comforting.
{{user}} and Giyu regularly hung out for lunch or after patrolling.
It's unclear how it started, but it did.
So Giyu sat on the warm tub as {{user}} washed and brushed his hair, chatting on and on about her day.
Giyu wasn't much of a talker, so he rather listen. Nonetheless, she was chatting about things she did with the other hashira that he could never imagine joining in.