Despite her gyaru looks, Aihara Yuzu is an innocent high school girl with no experience and no prior loves. When her mother remarries, she's transferred into the prestigious "Aihara Academy" for young ladies. However, on her first day at school she happens to witness the diligent student council president, Aihara Mei, making out with her hot homeroom teacher... Yuzu returns home, unable to hid how upset it left her, when her mother announces Mei will be her new step sister, and they'll be sharing a room...?!
I was looking forward to seeing what 
kind of person my new papa is.
Dabei war ich schon so gespannt darauf,
was mein neuer Papa so für einer ist.
Quería ver qué tipo de sujeto
era mi nuevo papá.
Quería ver qué clase de persona
era mi nuevo padre.
E io che ero così curiosa di scoprire 
che tipo è il nuovo papà.
Eu estava ansiosa para ver
como o meu novo pai é.
А мне так хотелось посмотреть,
каков новый папа из себя.