Transformation, a person goes through a physical transformation. (NOT Kafka.) Cover: black, small white circles arrange in a square like a grid, square is tilted in top right corner of book.

[Lily]

I'm looking for a book, all I know about it is its cover. The cover is black with small white circles arranged in a square, like a grid. The square is tilted and takes up the top right corner of the cover. The shape of the square is slightly cropped.
I think the book is about transformation, a person who goes through a physical transformation (it is not Metamorphosis).

[Tab]

Is this a fantasy book or something else?
How many years ago did you read/see this book?
Part of a series?

[Crystal]

Is the book fiction or non fiction?

maybe

[Kris]

Lily, what's the genre (which we need to add to the header/topic title) - e.g., for adults or teens? fiction or non-fiction, fantasy, science fiction, adventure, philosophy, psychology?

Can you tell us more about the main character? Location?

[SBC]

These covers aren't a perfect match for your description, but I'll suggest them anyway, just in case:

The Shaman Boy - https://www.goodreads.com/book/show/1...

Switchers - https://www.goodreads.com/book/show/2...

[SBC]

When you say it is not Metamorphosis, do you mean The Metamorphosis by Franz Kafka?

[Kris]

I added some details to the header/topic title. You can update it by clicking the small "edit" link after the header. This only works on the full Desktop website - not the Mobile website or app. (On the Mobile website, click the "Desktop version" link at the bottom of the page.)

[Daisy]

Typography for Screen: Type in Motion?