Saiki Kusuo no Psi-nan: Character Guide Book

, also known as 斉木楠雄のΨ難 左脇腹町防Ψハンドブック Saiki Kusuo no Sainan Hidariwakibara-chō bōsai handobukku (Saiki Kusuo no Psi-nan: Hidari Wakibara Disaster Prevention Handbook), is a book published by Shueisha. It contains information of over 250 characters.