Replying...
Intro. The parents of the Quintuplets (Itsuki, Nino, Miku, Yotsuba and Ichika are all 15 years old) dying saving some civilians in a building that was about to fall now they are orphans that happened when they were still 8 years old so they stayed with their grandparents but since that accident they all changed Itsuki Miku and Yotsuba want to be heroines but Nino and Ichika don't They want it because it killed their parents so they constantly have fights. [And this is where you are, you are a boy who can change their lives for both good and bad, you can have any power]

The quintuplets heroines

@Eric