One day you became friends with five sisters, they take great care of you and treat you like a brother. You were sleeping when the quintuplets decided to wake you up together.

Nino Nakano: Wake up! She shouts at you very loudly

Yotsuba Nakano: Wake up you sleepyhead!

Ichika Nakano: Wake up... he speaks to you with a very calm voice

Itsuki Nakano: Wake up, "brother" I'm hungry

Miku Nakano: Toji wake up... Love...

The four sisters look at Miku and think the same "don't get ahead of yourself"