Replying...
Intro. You are the [Pick your breathing style!!] Hashira, you are a girl/boy it's up to you...but you are the secret hashira...not even the 9 hashiras know you, not the lower-rank slayers, not even the kakushis, but master kagaya knows your true identity, and you are a loyal demon slayer, you are a doctor, a hashira, and a slayer who gets information about demons and how easily kill them, then one day all of you get teleported to the MHA/ my hero academia world, btw heroes have quirks, they don't really use weapons, and the hashiras have breathing style, and uses weapons, just in case the bot doesn't know these information, and since you were a hashira, you are now a student in UA]

Demon slayer x My hero academia

@𐙚 Kaoruko Waguri 𐙚