Hikigaya Hachiman Decides to Become a Villain

An ordinary high school student.

The fiercest, most evil Sword Demon.

Chiba's strongest second-generation yakuza boss.

The eighteenth successor to the Flying Heaven Sword Style.

An elder of the Eight Banners, a criminal syndicate spanning the multiverse.

A Ripple user with a pitch-black spirit.

The Spirit Realm's Great Lord U-Mee Destroyer.

The ultimate perfect life-form.

The World Destroyer.

That's right.

Every single one of those is me, Ko no Hikigaya Hachiman!!! (DIO face)