BUR #22468 has been approved by @nonamethanks.
create implication idolmaster_shiny_colors_song_for_prism -> idolmaster_shiny_colors
Since idolmaster_cinderella_girls_starlight_stage is linked to idolmaster_cinderella_girls, the same should be valid for idolmaster_shiny_colors and idolmaster_shiny_colors_song_for_prism. Song for Prism is a recent rhythm game based on the former (same setting, characters, songs).