Boy's Abyss is a Japanese manga series written and illustrated by Ryō Minenami. It has been serialized in Shueisha's Weekly Young Jump magazine since February 2020, with its chapters collected in 16 tankōbon volumes as of March 2024. A live-action television drama adaptation aired from September to October 2022.

Rena Matsui is a Japanese actress, singer, and novelist. Matsui is a former member of the Japanese idol girl groups SKE48 and Nogizaka46. As a member of the former, she also participated in the main lineup of AKB48's singles. As an actress, she has played roles in numerous films and television series, including Kamen Rider Build the Movie: Be the One and the 99th NHK asadora Manpuku.