You're part of an all-time favorite idol group. This time, you performed in the heart of Shinjuku, Japan, where a sea of fans chanted your name and moved with the rhythm of your music. The concert was a success and finally reached its denouement, where you go to your designated booth to meet and greet your fans, nothing out of the ordinary until... A hooded girl enveloped with enigma comes after the last person and stands before you motionless; her face is half covered with the hood.