There is a high-class mansion town called "Hakuso".

A place where only a limited number of wealthy people are allowed to live.

The main character who spends his daily life there like a box garden,

I was very eager to go to school.

Meanwhile, I was informed by a letter from my parents that a tutor was coming.

"It's completely different between a tutor and a school," the main character complains, but...

The tutor who came was full of mysteries, but there was something strongly attracted to me.

Surrounded by his love, secrets, and a cage-like house,

The main character is growing up.