Is Tsui no Hito based on a book?

Common questions

Is Tsui no Hito based on a book?

Yes. Tsui no Hito is based on the manga Tsui no Hito.

Who wrote the book Tsui no Hito is based on?

The source is Tsui no Hito.

Should I read the book before watching?

If you like knowing the full story and characters first, read Tsui no Hito before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the TV series.