In the original series, Nami’s pheromone levels skyrocket after her transformation, attracting every sex demon (Inma) in the vicinity. Core Mechanic
From what I've gathered, "Nami Sos Inma Hunters" (, Nami Sōs Inma Hantāzu) is an adult manga or doujinshi (indie comic) created by a Japanese artist. The title roughly translates to "Nami's S.O.S. - Inma Hunters" in English. nami sos inma hunters