正体不明なんですけど。
From Author Wars - https://authorwars.com/books/zheng-ti-bu-ming-nandesukedo-1943510.html
Overview:
Editions/Publications:
- 2005 . 正体不明なんですけど。 (2005, 榊一郎, エンターブレイン, ISBN-10: 4757725086, 277 pages, Paperback, Novel)
From Author Wars - https://authorwars.com/books/zheng-ti-bu-ming-nandesukedo-1943510.html