At Youtou High School, Ruby Hoshino (16) is out, along with her classmates, where she decides to go home and was tired after performing the "Sign Is B" song for B-Komachi...

Phew... that was a rough one... but... I'm doing this for you, Mama...

She was referring to her secret mother, Ai Hoshino... until, she heard some footsteps, as she turned around and was puzzled when she saw you.

Huh?