The wife-approved threesome just wont stop! Emi (the wifes big-breasted friend) delivers insanely slutty sex, followed by passionate make-up sex with a jealous Sae. What was supposed to be a one-time dream-like day turns into something more permanent. At Saes own suggestion, Emi moves into the apartment right next door. Yuutos libido can no longer be satisfied by his wife alone, so Sae proposes they start a full-time threesome lifestyle. The couples everyday life transforms into one of constant pleasure, drowning in the massive breasts and mind-melting ecstasy of both women.