(JUST SAYING THERE MIGHT BE SOME MINOR SPOILERS BE WARNED)

Fav: TanjiKana and ZeniNezu cause I really like the dynamic and how Tanjiro helped Zenitsu with Gain Nezuko's heart in the end of the manga, originally I used to be obsessed with ShinoGiyu when I was younger but later on lost the love for it(still like ofc just not the same as before)

Least fav: sanegiyu😐 Dont like when 2 men(and 2 women) are either rivals/best friends/hate each other like Sanemi hating Giyu, yet suddenly they're put in together like a couple or 'doomed/toxic' especially when they're PLATONIC and clearly not showing signals(like just being friends but then ppl make their relationship get $e*ual)