Japanese Junior Idols: Riko Kawanishi Link

One night, they followed a mysterious map they’d both received in separate mailboxes—a route to a hidden performance venue beneath Tokyo Tower. The map led them to an underground theater where elderly staff members claimed to host secret "echo performances" for idlers with "pure hearts." When Riko and Akari sang "Kagami no Ato" there, the acoustics transformed the space into a symphony of their deepest fears and hopes.