Eternal Boys is an original Japanese anime television series animated by Liden Films, directed by migimi and written by Kimiko Ueno, with the original concept credited to the real-life Manpuku Geinō Production. The series aired from October 2022 to March 2023 on Fuji TV. A manga adaptation by Chansana was serialized in Media Factory's shōjo manga magazine Monthly Comic Gene from April 2022 to July 2023.

Daisuke Namikawa is a Japanese actor and singer associated with Stay Luck. He began acting as a child and is sometimes mistaken with Daisuke Hirakawa, as their names only differ by one character when written in kanji. Despite his wide range of roles, he usually plays young heroes, such as Mikage in 07-Ghost, Fay D. Flourite in Tsubasa: Reservoir Chronicle, Jellal Fernandes and his counterpart Mystogan in Fairy Tail, Rokuro "Rock" Okajima in Black Lagoon, Jack The Ripper in Black Clover, Keita Ibuki in Black God, Goemon Ishikawa XIII in later instalments of Lupin the Third, and Yu Narukami in Persona 4. He has also been cast as anti-heroes or antagonists, such as Ulquiorra Cifer in Bleach, Hisoka Morow in Hunter × Hunter (2011), Kei Kurono in Gantz, Eustass Kid in One Piece, Dr. Genus in One Punch Man, Chōsō in Jujutsu Kaisen, Tōru Oikawa in Haikyuu!!, Kishō Arima in Tokyo Ghoul, and Momoshiki Otsutsuki in Boruto: Naruto Next Generations.