Test his virility.

The young repairman instinctively thrust his hip upwards and Mari giggled at her control over him.

"Ah, what a great cock," she smiled while continuing to stroke his thick veiny shaft in her small hands and teasingly probe his earlobe with her tongue.

"You came so much again," Mari smirked after he released a three jets of semen into the air. "Well, I wonder how many more you can do..."

The young repairman just groaned at the uncomfortableness of still being raging hard despite cumming.

"Then, I'll do this," Mari said as she swung her leg over him so her pussy hovered over his face. She leaned over and hungrily took his cock into her mouth, sucking in his cockhead to cause him to groan louder. In turn, he pulled her ass down so he could lap the sweetness of her wet pussy lips.

Dr. Sugimoto tap her tablet to change to another camera so she could get better angle to see Mari bob her head up and down on the young man's dick. She noted that her patient was getting better at fellatio, although still not experienced enough to deep throat such a massive cock without gagging.

Mari stiffened and stopped moving her head up and down as the two of them let out muffled moans.

"Ah... yes... I cannot believe I came too," Mari sighed after pulling his cock from her lips that were slathered with semen. After a moment to compose herself and lick the cum from her mouth, Mari swiveled around to face him.

"Gentlemen really like breasts," she smiled down at him.

The repairman nodded in agreement.

Mari took his still hard cock with her left hand and pressed the tip of his cock against her right nipple, moving it around her large areola.

"You like big breasts?" she asked.

He nodded.

Mari smiled and slipped his erection between her huge tits with his cockhead barely peaking through the mound of soft flesh. She squeezed together her breasts and moved them up and down to tit fuck him. His cock twitched and he thrust his hips up but she continued to massage his cock with her breasts until he could not handle it any more.

"Ah, it is gushing out!" she chirped as a geyser of cum spurting out from between her crevice of her breasts. He thrust his hips up and a massive load squirted out. "Just how much is going to come out?"

The young man shook his head and let out a sigh.

Dr. Sugimoto smiled that he had remained conscious after his orgasms while remaining fully erect. She wrote in her notes to ask Osano san the name of the air condition repair shop.