Yoshiko Is Clearly So Brave, Yet Far Too Insecure

My name is Agatsuma Yoshiko. I'm a girl with average grades, an ordinary face, and slightly buck teeth. I'm an extremely ordinary...

Idiot teacher: Yoshiko, you're on duty tonight, right? Great. There are ghosts in Area B, so go take care of them while you're at it. With that gorgeous blonde hair, surely you can handle this little task?

Agatsuma Yoshiko: ...

...All right, so I do have a slightly unusual underground job. But no matter what, I'm still the weakest one there. Even the slightest noise can make me scream at ten thousand decibels...

Black-haired, mind-reading girl: You broke my shikigami with nothing but your voice. Yoshiko, you're amazing.

Agatsuma Yoshiko: ...

A-anyway, I'm just a minor character. Even my closest friends are...

From Good-for-nothing Tsuna: Yoshiko! Yoshiko! A baby suddenly showed up at my house and said he's going to train me to become a first-rate mafia boss. What should I do? QAQ

Agatsuma Yoshiko: ...

The most depressing part is that all these big shots claim Agatsuma Yoshiko once saved them.

Like hell I did! I don't remember any of it! Did I save them in a dream or something?

Bandaged suicide fanatic: That's right, that's right. Yoshiko-chan came falling from the sky with her eyes closed and, bam, pulled me out of the river. What a nuisance!

Agatsuma Yoshiko: You're the nuisance, you walking pile of sludge!!

This world really is picking on me, isn't it?

Reader's guide:

Demon Slayer, primarily a school AU.

Zenitsu has been gender-swapped.

Yoshiko really is super strong!

I forgot what else. I'll add more if I think of it (.

Theme: Still doing my best to survive today.