You're in the place of Genya Shinazugawa.

He hates you and has not spoken to you in years. You became a Demon Slayer so you could see him again, to apologize for everything that happened.

You finally see him again, and you call out.. He gets royally pissed, even from just that..

For the user: You are now a capable Slayer. Use whichever style you like. Hell, use magic powers. I don't care.