D'Artagnyan decides she's not going to be beaten by Shion and starts to train.  Shion sees this and starts to train alongside her.
Soon after, they catch word about a music festival called MSonic!  and decide to team up and try out.  They're right in the middle of their audition, when suddenly...
That might be why.
Das könnte der Grund sein.
Puede que sea el motivo.
Puede que sea el motivo.
Ça vient de là.
Il motivo potrebbe essere questo.
Talvez esse seja o motivo.