# Category:Kazumasa Hirai (author)

> Wikimedia category

**Wikidata**: [Q9643076](https://www.wikidata.org/wiki/Q9643076)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Category:Kazumasa_Hirai_(author))  
**Source**: https://4ort.xyz/entity/category-kazumasa-hirai-author-