Hiroyuki Oshima feat. Rekka Katakiri is a collaboration credit that pairs Hiroyuki Oshima with Rekka Katakiri (片霧烈火), a Tokyo-based Japanese J-pop artist born on December 8. Rather than representing a standalone band, the name identifies a specific recording or project and is used as a featured artist billing on releases where one lead creator works with a guest vocalist or collaborator.
The featured format is common in Japanese music, especially for songs built around a primary composer and a featured voice. Here, the billing keeps the collaboration separate from each artist’s individual catalog while preserving the official release credit as it appears in discographies and theme-song listings. It also helps listeners identify songs credited to a production partnership rather than a permanent group name. For anime and J-pop cataloging, that consistency matters across music databases, opening and ending theme indexes, and release metadata, making Hiroyuki Oshima feat. Rekka Katakiri a useful entry for listeners who track featured performances, collaborative releases, and anime-linked Japanese music credits.
