Is Kaeranai Ojisan based on a book?

Common questions

Is Kaeranai Ojisan based on a book?

Yes. Kaeranai Ojisan is based on the manga Kaeranai Ojisan.

Who wrote the book Kaeranai Ojisan is based on?

The source is Kaeranai Ojisan.

Should I read the book before watching?

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