塞壬唱片-MSR (Monster Siren Records)* Arknights × DJ Okawari × Ai Ninomiya "Speed of Light" [Arknights -Side Story: Code of Brawl- EP] Release Date: November 19, 2019 Composed by: DJ OKAWARI Arranged by: DJ OKAWARI Performed by: 二宮愛 Ai Ninomiya, DJ OKAWARI *Monster Siren Records (MSR) is a fictitious record company in Arknights' World, and has nothing to do with any organization or company in real life.