Student with excellent academic results. To repay a debt for his family, he accepts a high-paying part-time job as a private tutor, but…

He does not pay mind to others' judgement and does what he thinks is right.

The eldest sister of the quintuplets. The caring elder sister type, but is lazy and hates cleaning her room.

Actually, she is keeping a secret from her sisters…

The second eldest of the quintuplets. While she cares the most for her sisters, she is stubborn and often goes against Futaro.

Good at cooking and prepares the meals at the Nakano household.

The middle child of the quintuplets. A girl with few words and a calm demeanor, but has strange obsession for Sengoku warlords.

She is good at imitating her sisters and is often asked to pretend to be one of them.

The second youngest of the quintuplets. She is very cheerful and gets along with everyone, but finds it hard to reject when someone asks for a favor.

The most athletic among her sisters and often helps out at other sports clubs.

The youngest of the quintuplets. A clumsy girl who is always serious and works the hardest, but never seems to achieve the result she sets out for.

Loves eating and eats the most among her sisters.