NFD-037 - Couples gathering at a swap bulletin board 13, North Kanto Adult Secret Base Edition

Boasting about one's lover, resolving monotony, and seeking further stimulation, people gather online and, with mutual consent, engage in sexual activity with others in front of their partners – an ultimate fetish! Women sucking and being forced to receive another man's genitals. Men aroused by their lovers being embraced by others, and forcing their erect genitals onto their partner's lover. This documents a portion of a swapping sex event held in North Kanto, where various emotions intersect.