Yuika.

Yuika removed her uniform skirt and panties, leaving on her thigh-high stockings, and clambered up onto the table to squat over Shouta's erection.

"Onii-chan, I want you to feel good with my pussy!" Yuika cried out anxiously as he pushed himself to sit up to face her.

"I will let my sister have a go," Mari sighed in disappointment that he did not pick her. Kneeling at the end of the table, she stroked his cock a couple of times before holding it still before her sister's pussy engulfed it.

Yuika wrapped her hands around the back of his neck for support while he held on to her waist before she lowered herself down on his cock. The high school senior squealed ecstatically while she violently pistoned herself on her brother-in-law's cock.

"Noooooo!" Yuika cried out when she felt his cock accidentally slip out of her pussy.

Mari immediately took advantage of the situation by grabbing his slick cock and hungrily engulfing it.

"Oneesan! Please put it back in!" Yuika begged.

Mari slurped the fat cock a couple more times before she reluctantly inserted it back into her sister's cunt.

"Oh yes! I am cumming!" Yuika cried as she resumed bouncing on her brother-in-law's cock. "Onii-chan, you can shoot your load inside my pussy!"

He held onto her waist and forced her up and down his cock, jamming it deeper into her hot cunt.

"Cum inside me! I want to have your baby!" Yuika pleaded.

"No!" Mari cried and pushed her sister forward so she collapsed onto of him and his cock slipped out, just before it spurted a thick stream of semen on Yuika's plump ass cheeks.

Mari again grabbed his still erect cock and swallowed it.

"Oneesan!" the younger sister whined as their brother-in-law blacked out again.. "Baka!"

"Impressive," Dr. Sugimoto sighed slipping her hands down to her own wet crotch.