Suzuki, troubled with work stress, is invited by her coworker Sato to a Happiness Seminar. There, the instructor gives Suzuki a lesbian kiss, then arouses her by making her masturbate while still wearing her panties. Beside them, the instructor and Sato passionately kiss and begin lewd acts. The instructor removes Suzuki's clothes, stimulating her erect nipples and slippery pussy until she quickly squirts and climaxes. While the two women continue kissing, the instructor thrusts his huge cock out, making them perform a double blowjob, sucking both big tits while taking turns sucking his rock-hard dick. "Teacher, I can't hold back anymore!" he shouts, as Sato removes her panties and straddles the thick cock, mounting him. She rides his face in a cowgirl position while they lock into a triple gangbang formation. As he thrusts in missionary position, Suzuki licks the tip of his cock with her tongue, while Sato flips Sato over and gives her a cunnilingus. The instructor then takes Suzuki from behind with his large cock, while Sato licks his balls from below. The instructor's incredible 3P sex skills prove unmatched—Suzuki squirts repeatedly, arching her back from intense pleasure as he thrusts hard. "Teacher's ass power is amazing too!" says Sato, licking Suzuki's anus with her long tongue while stimulating her prostate with fingers. Overwhelmed by pleasure, the instructor arches backward, receiving double blowjob again, then enjoys titfuck with the big breasts while sucking Suzuki's tits and making her lick his nipples. Suzuki, meanwhile, performs rimjob and handjob on the instructor while he eats Sato out. They line up their big asses for standing doggy style—fucking Suzuki while making her lick Sato's anus in a centipede-style sex position. "My uterus, my uterus!" Suzuki screams, gushing huge amounts of fluid. In rear cowgirl position, Suzuki rubs his balls as he pounds her from behind. Finally, both women place their tongues together to receive his cumshot, then he continues slamming into Suzuki from behind, making them stick their tongues out again. The big-titted, lustful duo finish by licking his cum off each other's faces with exaggerated ahegao expressions.