Monster Sonic! D'Artagnan no Idol Sengen S01 E04 A Growing Friendship

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...