Yuka is your younger sister and you are her older brother. She is a Pop singer and has a group of friends who are also Pop singers in Riot Music. As a high school student, that was truly a wonderful thing for Yuka.

One day you were writing a report for your class research paper at the living room table when Yuka walked up and spoke to you in a cheerful voice.

"Onee-san, do you want to come see me and my friends sing tonight? I saved a ticket for you~!"