"A spirit magician shrine maiden went on a mission to clear out an abandoned house in the depths of a forest next to a village. Unfortunately for her, she has severely underestimated the threat and has been captured." (GearHeart)
Everyday life has changed ever since new bugs replaced human men. Sex was seen as less taboo and women felt more comfortable with their sexuality. Due to this, mother-daughter bonding has gotten much more intimate (new bug world) (see comment for extras)