Siren: ReBIRTH is an online manga adaptation of the first Siren game, this time set in the present day, to replace Call of the Red Sea after its end due to the author's ill health. Overseen by the Project Siren Team, with a scenario by Tsutomu Sakai and art by Yukai Asada.

Asugure General Hospital has an "in-house security department," which is rather uncommon in Japan. Kawamoto is hired as a clerical worker for the security office, which deals with patient disputes, complaints against doctors, and other accusations like improper treatment and medical malpractice. The story also features Murai Osamu, the chief detective, and Sakakibara Shunsuke, a genius surgeon who recently returned to Japan from overseas. A full-fledged medical x detective mystery! The two professionals will expose the "sickness" and "darkness" that lurks within the halls of the hospital. (Source: Young Champion Web, trnslated)