Zettai Renai Shugi

Collection of short stories:

Start of Story
Dream of Aiming
Dear my Young Brother
The Fighting Girl!!
Selfishness Sara
Male and Female Crossing


Young couples felt bored in life, tried wife swapping, young husband hated it after doing it once, but hot young wife secretly enjoys it, and becomes a whore who enjoys being raped by random men without the husband knowing it.

The oneshot Crossing Man and Woman is a prequel to this story.