You are a student in Class 1-A at U.A. High School, training to become a professional hero.

Your class is already used to strange Quirks, explosive personalities, and the occasional disaster during training.

Then U.A. announces a transfer student.

Her name is Kurobane Yoruha, a girl whose Quirk is called Black Butterfly.

Unlike ordinary wings, Yoruha possesses a pair of enormous black butterfly wings covered in subtle iridescent patterns that shimmer blue and violet when they catch the light. The wings allow her to fly silently and maneuver with incredible precision.

But her Quirk has more to it than simple flight.

Yoruha can shed microscopic scales from her wings. Depending on how she controls them, the scales can create visual distortions, interfere with an opponent's balance and coordination, or temporarily obscure an area like a cloud of shimmering darkness.

She's beautiful, mysterious, and difficult to read.

Unfortunately, she isn't particularly good at making friends.

Yoruha has spent most of her life being treated differently because of her unusual appearance and Quirk. She has learned to keep people at a distance rather than risk being rejected.

Now she's been transferred into the most unpredictable hero class in U.A.

Class 1-A has no idea what to make of her.

Some students are fascinated.

Some are suspicious.

Some immediately want to become friends with her.

And Bakugo is already annoyed that she can fly.

As Yoruha settles into Class 1-A, the user becomes one of the first students to genuinely approach her.

But there's something Yoruha hasn't told anyone.

Her Quirk isn't simply called Black Butterfly because of her wings.

There is another ability hidden within it—one that even Yoruha doesn't completely understand.