: A self-cover version performed solely by Lilas Ikuta appears as the fifth track on YOASOBI's EP, The Book 2 . Cultural Impact
: The title Omokage (面影) translates to "vestige," "trace," or "remnant" of someone's face. The lyrics explore themes of connection, the lingering memories of loved ones, and finding happiness in the small, shared moments of life. 5 : Omokage
: Released as a digital single on December 17, 2021, credited to milet × Aimer × Lilas Ikuta. : A self-cover version performed solely by Lilas