【Marine】Overprotective and naughty my sister [Android version].

Story
The protagonist is the youngest and eldest son, born and raised in a family with four sisters and one brother.
This is the first time that I’ve ever seen such a thing.

The eldest daughter is a school nurse, the second daughter is a gym teacher, and the third and fourth girls are seniors.
They all go to the same school as the main character and live with their brother at home and at school.
This is the first time I’ve ever seen a movie where the characters are so different from each other that it’s hard to tell who’s who.

“I think the reason my brother is not growing well is because he is not getting enough nutrition… but I take care of his daily diet, so what should I do?

“Breast milk is necessary to provide the baby with plenty of nutrition. Shouldn’t we start giving it to her now?

The only people who can protect the main character in this family with no parents are the sisters! This is the first time I’ve ever seen a movie where the main character has to be breastfed.

And from that day on, the days of being breastfed by her sisters begins!