A swapping enthusiast couple who applied for a job at a manufacturer act as the instigator and pick up an ordinary couple who are staying at a hot spring! Called a room drinking party, a party is called to a room with hidden cameras! The person who set it up is a married couple, so they let their guard down, get them drunk, and talk frankly erotically! While listening to the reaction from the casual body touch, I started swapping all at once.