Four childhood friends who have always been together and attend the same school. They walk to school together, spend their breaks together, eat lunch together, and go home together. They spent so much time together that they thought they would be best friends forever.
One day, the cheerful mood-maker Meisa is seen kissing the teacher...
Itsuki and Karin, who witnessed this, were shocked.
When they questioned her about it later...
"Actually, I like him too..." Itsuki whispered.
"Me too!" "Wait, I do too!" It turns out all four of them love the same teacher.
A middle-aged teacher... that doesn't matter.
Breaking school rules, or even the law... that doesn't matter.
Public perception is out of the question.
The love of a teenager is devoid of any calmness, filled only with passion.
In a panic, Yuna tries to keep him all to herself, but Itsuki and Karin decide they can't let him go.
The three of them fight over the teacher in a harem, while Meisa watches from afar...
Later, they gather the teacher for their first confrontation.
To decide who is the favorite, a ruthless battle of sex began.
Who will be chosen in the end...?
