Cambrian Last stage The proliferating lewd beast!

Cambrian, which is transmitted through reproductive activities! This ``Cambrian'' girl, who started out as a conspiracy by Yamagishi, gets involved with Keiko's colleagues and lovers... They become Cambrians, and their faces become distorted in ecstasy as they pursue only pleasure. On the other hand, he sets a lewd and cunning trap for Keiko and the others who continue to refuse to be Cambrian, but at that time, changes begin to appear in Keiko's body...