櫻井孝宏
A drama CD adaptation of Part 4 was released from 2016 to 2017 in two parts. The first was titled and the second They were only available with the limited edition Blu-ray release of David Production's "Diamond Is Unbreakable" anime adaptation, and starred Yūki Ono as Josuke, Wataru Takagi as Okuyasu, Yūki Kaji as Koichi, Hiroki Shimowada as Toshikazu, Yuko Lida as Junko, and Takahiro Sakurai as Rohan.