Shinozaki Sumir is in a very difficult position, without money and people able to help her after her mother suddenly disappears.
In despair, she decides to contact the forum "free frinds " to earn a little money.
So she meets Kaito -kuna and soon understands that he is not just a new acquaintance.
Kaito works as a teacher at the Minatohasi Higashi Academy and he believes his only minus - the inability to form substantial intimate relationships (in short, his relationship with girls and everything is not adequate and all
They throw him) .... in general, he does everything easier and satisfied his needs due to the purchased love.
Therefore, he is a rather frequent visitor to the forum "free forts ".
Thanks to which he can meet, get acquainted with various girls, have sex and at the end just pay them for time.
Having met Sumir, he understands that she is not just another girl for one night.
The violets who loves our heroine reminded Kaito of his own sister with whom he was separated in childhood when his parents divorced.
They like the past and they seem to know each other for a very long time ...