What separates Fuufu Koukan from standard smut is its focus on the psychological aftermath. The manga does not shy away from the physical act, but the true drama occurs in the days and weeks following the swap.
The new volume introduces a devastating twist: the other couple was specifically targeting them. It wasn't a random swap; it was a calculated infiltration. This shifts the genre from "erotic thriller" to "suspense drama," keeping readers on edge.
While both deal with "couples," they target very different audiences: