[Crossover] My Superpower Is My Ex-Boyfriend

I’m Kawakami Haru. After U.A. started the new school year, I discovered that I had a second Quirk

“Congratulations, Kawakami. You’ve awakened a second Quirk. Given how unusual it is, we need to know your ex-boyfriend’s Quirk,” the young woman in the Quirk Registration Department asked me as part of her routine duties.

But

“...” After a baffled silence, I stared at her, completely confused. “B-but I’ve never dated anyone.”

#An injustice for the ages! I haven’t even had my first love, so how could I have an ex-boyfriend!#

#Ex! Boyfriend!#

#Sentenced before I’ve even dated anyone#

tips:

1. The heroine is the daughter of 270 and Kyoko. The First Love pairing will absolutely not be broken up. The surname issue will be explained later.

2. The main world's setting is ten years after the future war, the one with the one-in-eight-hundred-trillion miracle.

3. Worlds involved include the balding Touken Ranbu, those years in Konoha, the troublesome little sword spirits, the psychic powerhouse who married Coffee Jelly, the battle for the inferior cup, and more.

Recommendation time:

A new Demon Slayer fic next door, “My Quirk Is Becoming a Demon”: Fighting demons with demons, my years as a Hashira.

Blurb: I’m Onizuka Hanazhi, an utterly ordinary high school student in Class 1-A at U.A. High School.

My Quirk is Becoming a Demon. Whether it’s Sadako, Hanako, Kayako, Shuten Doji, Ibaraki Doji, or Yamata no Orochi, I can become any demon you can imagine.

Onizuka Hanazhi’s three daily lines: I’m scary. Stay away from me. Nobody could ever like me.

Class 1-A’s three daily lines: So adorable! Let us give you a big squish! Hanazhi is the class darling, no explanation needed!

After the Battle of Kamino, I transmigrated to the Taisho era. Before I could even take in my surroundings, a long red sword came swinging down at me.

Onizuka Hanazhi, Sadako version, instantly turning pale with fright: QAQ

The red-haired swordsman, startled by a demon turning into a person: ???

Excerpt:

The Demon Hashira, Onizuka Hanazhi, could scare demons so badly they fled at the mere mention of her.

At the Nth Hashira meeting, before it had even begun, a letter tied with a strip of white cloth was thrown at the Demon Slayer Corps' entrance.

The demons: We won't eat people anymore, we promise! From now on, we'll all be vegetarians QAQ

The demons: Please give us a chance to atone! We'll carry sacks or lay bricks, anything QAQ

The demons: We'd rather drink wisteria tea and sunbathe. Please, just don't let the Demon Hashira out again QAQ

The scumbag boss, driven to a nervous breakdown after Sadako, Hanako, and Kayako crawled out of all kinds of cassette players, stereoscopes, and even car engines: ...C-count me in!

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