It started with the sudden death of Mom. The younger brother, unable to wean himself from breastfeeding, used his sister's breasts as a pacifier for ten years. The brother improved his tongue movements each year while sucking, and the sister became increasingly sensitive; her nipples, mammary glands, and milk lines awakened as erogenous zones. Although they recognized this as an abnormal daily life, the sister with 'malfunctioning maternal instincts' and the brother with 'abnormal development' could not sever their twisted relationship, instead becoming more engrossed in building an even more perverted incestuous bond...
