How are Image songs determined? (e.g. Why isn't "Koisuru Mikata" considered an image song for Ritsuko, but "LOVE Order Maid" is?
I understand songs like "START!!" or "ALRIGHT*", but what about songs from the Famison 8-Bit CD's, the Twelve Seasons series and the Million Live! series? Are solo songs or solo remixes considered, like Ami singing "Suki" on her MASTER ARTIST 2 CD or Haruka's "Kimi no Mama de" on the Namassuka Curtain Call CD?