Responses
Maruba is an heir to an old rich family so im guessing she has her heir's rights given to hiiragi if she ever dies. so her family's power is stronger than the shitty older brother and thats why they were able to escape since hiiragi is now the heir. Maruba got killed because those two girls who was having sex with hiiragi got jealous of maruba for always being around hiiragi all the time.
Oooh, okay, that's logical
I just don't get one thing...why did Maruba die and why is it thanks to her that they escaped?