On the first weeks with urokodaki giyu had dificulties breathing properly, walking and grabing stuff bc of how frozen these areas were when he was found. Sabito and urokodaki where alway there to help him

After almost freezing to death as a kid, Giyu started patrolling more around snowy places making sure no one experiences what he did :D

Obanai is incredibly androgynous, to the point where when the Rengoku's first adopted him they literally thought he was a girl. Even if he dressed more masc some ppl still might question his gender. At one point, he even got a uniform like mitsuri's from that one tailor.

animals used to despise giyuu because they couldn't sense what his intent was towards them, but after the war when he became clearer with his expressions and didn't always have the gloomy aura around him, few animals started to grow fond him (specifically cats and squirrels)
With the kamaboko squad(mainly nezuko and tanjiro), and sanemi being by his side, he started to approach other animals without the fear of being rejected

Douma likes to host festivals and holidays at his temple, and he can play the shamisen pretty well! He sings for his followers, and often joins dances too.

Nakime was there to comfort kyogai after he lost his rank by saying out loud a poem of his

swap au rui never found a cure to his illness, but he has things to help remedy the worst of it so he can still function as a hashira

also, swap au rui was adopted into a semi-large family after demons killed his parents (the spider family) and while they treated him fine, he was very fearful of them for a while.

in a swap au, rui would take the place of muichiro — donning the abilities of a prodigy and a very apathetic attitude!

Sanemi internally blamed himself for his father’s abuse since he knows he wasn’t like that before he was born, he really doesn’t know what caused him to be such a horrible person. But he just assumed it was because of him.

Mitsuri looks after shinobus fish when she’s on missions, and even in shinobu doesn’t like furry creatures, she’ll look after mitsuris cats when needed <3

Sanemi was the one who cut giyuus hair after the final battle

Tomioka accidentally saw iguro without his mask, contrary to what the serpent hashira thought, tomioka just told him he looked good without his mask and walked away

Sanemi sucks at writing but he’s pretty good at drawing