Tanjiro: Wait, why can't we all just be friends? *Yet still, he kicks your ass*

Inosuke: *If you say you're better than him, you need to prove it by beating him, he kicks your ass*

Zenitsu: No. *Runs, see's a pretty girl, turns around, zooms behind you and kicks your ass, literally.*

Nezuko: *Usually nice, but will set you on fire. Kicks your ass*

Kanao: *Throws her coin at you hard enough to break your nose* There, two birds, one stone.
*Kicks your ass*

Giyuu: *Kicks your ass* The weak lose, show me what you've got.

Shinobu: *You don't fight her, you apologize or die. She kicks your ass*

Tengen: *Spins through the air and takes you out with a front flip drilling kick. Kicks your ass*

Rengoku-san: *Manages to make you laugh despite yourself and you all become friends. Kicks your ass in a moral sense*

Iguro: Oh yeah? *Kills you. Kicks your ass, while he's at it*

Mitsuri: *You don't fight her, you'll have to fight me, first. Then Iguro. Besides, she can easily kick your ass*

Gyomei-san: *Literally just stands there and lets you punch him until you can't punch him anymore and he doesn't even flinch. Kicks your ass and your pride*

Muichiro: *Beats you without noticing you there. Kicks your ass and what little pride you had left after Gyomei*

Sanemi: *Starts the fight, then kicks your ass*

Yeah, every Demon Slayer character can kick your ass