Ravex in Tezuka World is a what‑if “Return” story set after the conclusion of the original manga. It follows the robot boy after his final act of saving Earth. While drifting through space, he is rescued by the three members of Ravex and miraculously revived by “Space Jack,” rather than Tezuka’s Black Jack surgeon. The reborn robot boy is renamed “Ratom.” The narrative brings back Princess Knight and other Tezuka characters. BoA, Maki Goto, Anna Tsuchiya, Tohoshinki, and TRF contribute to the accompanying album. An event celebrating the release will take place at Tokyo’s National Museum of Emerging Science and Innovation on April 10, and the album also marks Avex’s 20th anniversary.