stay virgin OR you will die

What if the secret behind your death was hidden in your closest friendship-and in an innocent-looking past?

Ichijou Kazuya's life ends at the age of thirty, murdered by his own best friend, Masaki.
But death is not the final destination.

Kazuya wakes up fifteen years in the past-back in his high school days.

This time, he has a chance to change fate.

But the rule is cruel and absurd:

If he loses his virginity, his death is guaranteed.

As Kazuya struggles to navigate friendship, jealousy, love, and the invisible threads of destiny, he slowly realizes the truth-
his murder was never about one mistake,
but about countless small choices that quietly shaped a monster.

To survive, Kazuya must protect more than his own life.
He must stop a tragedy before it is born-
even if it means standing against his own future.

Can fate truly be rewritten,
or does it always demand a sacrifice?