Is Under Ninja based on a book?

Common questions

Is Under Ninja based on a book?

Yes. Under Ninja is based on the manga Under Ninja by Kengo Hanazawa (2018).

Who wrote the book Under Ninja is based on?

Under Ninja was written by Kengo Hanazawa and first published in 2018.

Should I read the book before watching?

If you like knowing the full story and characters first, read Under Ninja before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.