| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Battle Royale Slam Book: Essays on the Cult Classic by Koushun Takami | 978-1-4215-6599-6 (1-4215-6599-4) | 2014 | Nick Mamatas |
| The Future is Japanese | 978-1-4215-4223-2 (1-4215-4223-4) | 2012 | Nick Mamatas ยท Haikasoru |