Arimasa Oosawa Complete Listings

■Arimasa Oosawa

■ Majo No Kokai (KAPPA)
　Osawa Arimasa / Cho
BOOK | 2026/02/18
within 2-4 weeks

■ Jinsei Reach, Tokidoki Tsumo Mah-jong Novel Kessaku Sen (Tokuma Bunko)
　Osawa Arimasa / [Hoka] Cho
BOOK | 2026/02/07
within 2-4 weeks

■ Black Chamber (Tokuma Bunko)
　Osawa Arimasa / Cho
BOOK | 2025/11/08
within 2-4 weeks

■ Banshu Iki (Futaba Bunko)
　Osawa Arimasa
BOOK | 2025/06/11
within 2-4 weeks

■ Fukumen Sakka [First Volume] (Daikatsuji Hon Series)
　Osawa Arimasa
BOOK | 2025/05/28
within 3-7 days

■ Fukumen Sakka [Last Volume] (Daikatsuji Hon Series)
　Osawa Arimasa
BOOK | 2025/05/28
within 3-7 days

■ Sozoku Jin TOMOKO (Futaba Bunko)
　Osawa Arimasa
BOOK | 2025/05/14
within 2-4 weeks

■ Repair Ra
　Osawa Arimasa
BOOK | 2025/02/28
within 2-4 weeks

■ Neppu Danchi (Kadokawa Bunko)
　Osawa Arimasa
BOOK | 2025/01/25
within 2-4 weeks

■ Kuroishi (KAPPA NOVELS Shinjuku Same 12)
　Osawa Arimasa
BOOK | 2025/01/22
within 2-4 weeks

■ Rambo (Kobunsha Bunko)
　Osawa Arimasa
BOOK | 2024/12/08
within 2-4 weeks

■ Kikyorai (Shueisha Bunko)
　Osawa Arimasa
BOOK | 2024/11/20
within 2-4 weeks

■ Yoru Keiji
　Osawa Arimasa
BOOK | 2024/10/28
within 2-4 weeks