Also known as: 異次元フェス, アイラブ歌合戦, 異次元イラスト投稿フェス, アイラブ歌合戦_Day2, アイラブ歌合戦_Day1
A two-day crossover live concert event that took place at Tokyo Dome on December 9 & 10, 2023, featuring Aqours, Nijigasaki High School Idol Club, Liella!, and Hasu no Sora Girls' High School Idol Club, as well as representatives from Idolmaster Cinderella Girls, Idolmaster Million Live!, and Idolmaster Shiny Colors.