A cute face and a supple body "Atsushi" (Atsushi Hosoda) commutes to university from his older brother's house. While his brother is away on a business trip, he finds himself alone with his older brother's wife, Natsuki Waka. At night, peeking into the bedroom, he sees his older brother's wife talking to his brother on her smartphone. She invites him on a trip after he returns from the trip, but he refuses, saying he's busy. After hanging up, she starts masturbating while pinching her nipples.
Atsushi bursts in, startling her. He presses her, "Won't you do it with me?" but she refuses, saying, "I can't do that." "...Um, 10 seconds! Just 10 seconds, that's all I ask," he says, exposing his erect dick and inserting it in the missionary position. "...10 seconds have passed, so pull out," she says, pushing him away, and he reluctantly withdraws.
The next morning, Natsuki, remembering the incest with her younger brother-in-law, presses her crotch. Atsushi calls out to her and hugs his older brother's wife as she tries to flee. "You can't forget what happened yesterday, can you?" "No, what are you saying? That can't be true, right?" she protests as he gropes her breasts. He fingers her and says, "Then why are you so wet?" showing her his fingers covered in love juices. He steals her lips and licks her nape.
On the sofa, he licks her nipples and shaved pussy, and fingers her. Resigned, his older brother's wife gives him a handjob and sucks his dick. He fucks her in the missionary and doggy style on the sofa. On the rug, he cums inside her in the cowgirl and missionary positions. In the bathroom, while showering, he gropes her breasts. They intertwine tongues, he sucks her nipples, fingers her, and performs cunnilingus. She gives him a handjob, licks his nipples, dick, and balls, and he cums in her mouth. He makes her cum with fingering.
On the kitchen counter, he makes her get on all fours and performs cunnilingus. He has her sit and intertwines tongues. He sucks her nipples and fingers her. He makes her grab the counter and fucks her from behind. On the bed, they intertwine tongues. He gropes her breasts and fingers her. He licks her armpits and nipples, fingers her, and performs cunnilingus. She sucks his nipples and dick. He ejaculates inside her vagina in doggy style, cowgirl, legs-up, and missionary positions, and she gives him a cleanup blowjob.
The next morning, Natsuki sneaks into the Japanese-style room and pokes the cheek of her younger brother-in-law sleeping in the futon. She presses her lips to his. Waking up, Atsushi intertwines tongues with her, saying, "Let's do it one more time before he comes back." She licks his nipples and gives him a handjob. He sucks her nipples and fingers her. He makes her grab the low table and fingers her. He lays her on the low table and performs cunnilingus. Standing with legs apart, he has her lick his dick and balls. They 69 on the futon. She straddles him in the cowgirl position, switches to reverse cowgirl with a flower clock, and grinds her hips in a backward arch. He makes her grab the floor pillar and cums inside her in doggy style and a reverse scissor position. They intertwine tongues, and on the futon, he cums on her face in the missionary position, and she gives him a cleanup blowjob. She begs, "Even after he comes back, will you do it with me again?"