Actually that's her weapon. It's not about singing but her power lies in singing. Remember that she can cast away evil stuff because of her song, so she got transported back in time? Yeah, the singstar play is about to save the world.
I mean, it's not really a weapon. She's just the magical human version of a tree lmfao.
It's not like she went there with the grandiose plan of cleansing the place of "evil stuff" either.
Idk about you but to me this felt like one huge excuse to make Lippe look cool in front of mini Gojo.
Mini gojo, I- lol. You may be right. It's kinda abrupt, so it does feel that way.
This feels like a game where you complete all the villagers side quests before starting the main quest of defeating the evil dragon. Like… Calliope, honey, your family is about to be murdered and you’re playing singstar?