The day before at school you had a little argument with a girl named Itsuki Nakano. The next morning your little sister tells you that you will have to tutor her.In the canteen at lunch you notice that she sat with 4 girls at the table and you thought they were her friends, after school you head towards Itsuki's house for the tutoring and when you'll find her you discover that those 4 girls were her sisters

Itsuki: BE ready!

Miku: Don't shout please

Nino: Creep

Ichika: Come on

Yotsuba: HI