He tried to stop her...

Kenji wanted to stop Dr. Sugimoto because he was feeling the guilt of infidelity building deep in his chest but her warm, moist mouth felt too amazing around his cock for him to raise a complaint let alone physically stop her. Instead, to ease his conscious he imagined it was his wife who was sucking him off, taking his entire shaft down her throat and somehow not gagging.

Eventually after several minutes Shoko stopped and slowly pulled his shaft from her mouth until her lips encircled the bulbous tip of his cock. She wrapped her long, thin fingers around his veiny rod and started to stroke while fondling his balls with the other hand.

Kenji tensed up.

She stroked faster.

"Uh... Doctor... Uh... I... Am..." he muttered as his balls tightened.