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He waited for a moment. The urge to climax receded. He checked the time; only three minutes had passed.
He walked around the living room, his member still standing. He noticed the pants on the floor—the temporary adulterer's. He looked like a thin man. Could such a man really satisfy Sayu? No, Sayu had done it with him many times before; if she said he was good, he must be.
Ten minutes hadn't even passed, and Yoshida couldn't sit still. He had completely forgotten his thought about letting her stay with the man all night. The warmth in the sock had faded. It was getting boring. He hesitated, then walked quietly to the bedroom door, knelt down, and pressed his ear against it.
He couldn't hear anything. Maybe they hadn't started, or the soundproofing was too good.
Should I go out and buy birth control? he wondered. A scumbag like that would definitely finish inside without a condom. But if something happened while he was gone, he couldn't leave her.
While lost in thought, he shifted his aching body and pressed his ear back to the door.
Creak... creak...
It took Yoshida a few seconds to process the sound.
Creak, creak, creak...
The weight of two people on the bed, moving intensely, made the bedframe groan.
Creak, creak, creak...
Sayu was having sex with someone else.
Yoshida gripped his member and began to stroke. He was annoyed he had missed the moment of insertion. He couldn't hear her moaning. Was she holding back because she knew he was outside? Or was it just the door?
Either way, the rhythm of the creaking bed was enough for his imagination. Yaguchi really was impressive; the bed kept rhythmic time with Sayu's pleasure.
As Sayu stepped back into the bedroom, the air felt stagnant. Yaguchi was sitting there, smug and expectant. He wasted no time; he shoved her onto the bed, his movements rough and lacking the gentleness Yoshida had shown her.
"Finally," he grunted, his hands fumbling with her skirt.
Sayu didn't resist. Instead, she focused on the heavy silence of the apartment, knowing Yoshida was just on the other side of the wood. He's listening, she thought, and a jolt of electricity shot through her.
Yaguchi smirked and slowly ran his hands up her thighs, pushing her skirt higher. He leaned down, breathing hotly against her neck as he rubbed his thick, hardening cock against her panties. Sayu parted her legs wider, letting him feel how wet she already was. "Hurry up and fuck me..." she whispered, voice deliberately loud enough to carry.
Before penetration, Sayu slid off the bed and dropped to her knees in front of him. She looked up with half-lidded eyes, knowing Yoshida could hear every sound. "Let me taste it first..." she purred. Yaguchi grinned and stood, his heavy cock bobbing in front of her face. Sayu wrapped both small hands around the thick shaft, stroking it slowly while licking the underside from balls to tip with long, wet strokes of her tongue. She savored the salty, musky taste, making loud, obscene slurping noises on purpose.
"Mmm... so big..." she moaned, then parted her lips and took the swollen head into her warm mouth. She sucked hard, hollowing her cheeks as her tongue swirled around the glans, lapping up the leaking precum. Yaguchi groaned and placed a hand on her head. Sayu bobbed deeper, taking more of his length until the tip nudged the back of her throat. She relaxed her throat and pushed forward, swallowing him until her nose pressed against his pubic bone in a messy deepthroat. Thick strings of saliva dripped from her chin onto her shirt and the floor as she gagged wetly but kept going.
"Gluck... gluck... gluck..." The lewd throat-fucking sounds filled the room. Sayu pulled back with a gasp, strings of spit connecting her lips to his glistening cock, then immediately dove back down, sucking noisily while stroking the base with both hands. She looked toward the door with teasing eyes, performing every sloppy lick and deep suck for Yoshida. Yaguchi thrust gently into her mouth, fucking her face as she moaned around his cock, the vibrations making him twitch. Saliva ran down her neck and soaked the front of her clothes. After several minutes of enthusiastic oral, Sayu finally pulled off with a wet pop, panting heavily, her lips swollen and shiny. "Now... put it in me..."