Roy is the author of:
- The Man Picked up by the Gods - Kamitachi ni Hirowareta Otoko 神達に拾われた男
- The Man Picked up by the Gods (Rewritten) - Kamitachi ni Hirowareta Otoko (Kaichōban) 神達に拾われた男(改訂版)
- Kōkōsei ga mahōtsukai ni naru made 高校生が魔法使いになるまで
Roy is the author of: