Sticking to the rules.

I don’t know if Lawan is more shocked by the sight of what Piya and Yui are doing or by the fact that she just heard her teacher swear for the very first time. If she is shocked at that, she is in for an even greater surprise.

“No, not me?” Candace asks the heavily distracted Yui as she quivers through a somehow silent orgasm.

“Anyone but you,” Yui says when she is able to speak, her voice a raspy croak.

A look passes between Candace and Piya before the Doctor presses against the small of Lawan’s back and pushes her forward. “Go on Lawan. Just like I showed you.”

Lawan’s face is practically on the bottom of the pool as she and Yui both call out, “WHAT!!” at exactly the same time.

“You said anyone but me and Lawan is anyone,” Candace tells Yui, her distracted brain again walking her right into a trap.

“But Miss Yui is my teacher and I’ve never done this before,” Lawan protests, her face bright red.

“Ooh you are such a liar,” Candace chuckles, “you had your fingers inside me two minutes ago.”

Lawan turns deep red now.

“And you’ve practically graduated already,” Piya joins in with Candace.

Lawan’s heart is going a million beats per minute as she half bobs-half swims through the deep water and takes her place in front of Yui. Piya moves out of her place between Yui’s spread legs and brings Lawan where she needs to be. “Go on Lala. Make her scream,” Piya encourages as she moves next to Yui on the pool ledge.

“Miss Yui. May I?” Lawan asks before she does anything.

Yui nods her head at Lawan. Her focus now on the slight Thai teen in front of her.

We all watch as Lawan slides her fingers inside Yui’s pussy with a gentle grace. In almost no time Yui’s abs tighten as she jolts up off her seat. Her neck jerking in great sudden movements as her jaw distends.

“That’s five,” Piya counts out the number of times Yui has cum already, “I don’t care if it’s one hundred. You’re not going to win. Just call out already.”

Yui shakes her head frantically and I can tell she is just dying to let out a moan or a scream. The urge to make some noise must be killing her after first Piya and now Lawan making her cum again and again without interruption.

Piya wanting to increase the pressure on Yui reaches behind her to unfasten the clasps on her bikini top. Piya pulling the bikini free of Yui’s body leaving her completely naked in the pool. With Yui undressed Piya moves onto Lawan next and strips her bathers from her chest. Her silver shot nipples little pricks on her chest as the cold air sends a shiver through her body and then Yui’s. Piya is the last to discard her top on the ground beside the pool, leaving both of them naked and Lawan in just her bottoms as Yui’s hands come to cup Lawan small breasts.

Lawan has no restraints placed on her voice as she lets out a needy moan as Yui fingertips start to roll her sensitive nipples between her thumb and forefinger. My mind is immediately taken back to my night with Lawan as I hear her call out in pleasure once again. Candace has moved closer to me during all this and I feel her hand come to rest on my leg under the water. Her touch close to my aching groin makes me jolt up onto my toes. With my right hand, I trace the smooth skin and gentle contours of Candace’s back as I come to rest my fingers against the rear snap of her bikini top.

Without turning to face me, Candace simply says, “when in Rome,” giving me the go-ahead to unhook her bikini and let the strings fall where they may. She lifts the two triangles of swimsuit off over her head and lets them drift off into the pool water. Freed of their covering, my hand moves around her ribcage and onto her large enhanced breast from behind just as her hand moves over to rest on the hard shaft of my cock contained by my briefs. I too gasp as Candace starts to run her hand along the length of the Kangaroo swimmers as I take a feel of her beautiful tits, my other hand joining my first on her pale globes.

Lawan continues to play with Yui’s tortured pussy beneath the water as Piya, Candace and I watch on. I’m not sure of the count as my attention has switched to Candace’s hand sliding into my bathers. The chill of the water replaced by the warmth of her palm as it starts to tug me quickly under the water. I can’t keep my hand from sliding into the back of Candace’s bikini bottoms and against her slit. Her legs parting willingly as I slide my middle finger deep into the Doctors hot pussy. Candace’s fingers squeezing around me as I part her pussy lips.

I'm getting close to boiling in the water just as Candace knows Yui is when she instructs Lawan, “that’s it! She ready for the other thing I showed you.”

Lawan turns to where I am groping Candace in the pool and nods before looking at Piya quickly before focusing in on Yui.

“Miss Yui,” Lawan says.

“Yes… La… wannn…” Yui slurs.

In a huge shift in the teacher-student power dynamic Lawan tells Yui in a commanding tone, “this is how your boyfriend first fucked my virgin pussy!” As she says it Lawan reaches up with her free hand and grabs a tight fistful of Yui’s hair behind her neck and yanks it back hard.

Yui head is jerked back as she lets out a loud, “ooooowwwww!” as Lawan starts to ram her hand hard into Yui beneath the water. The shocked, “ooowwww,” turns into an “OOOOWWWWOOOOWWWW!!!” as Yui starts to rise up horizontal out of the water. Lawan’s hand driving three or possibly four fingers into Yui snatch as she makes a secret motion with her hand.

Watching Yui thrash and scream and swear because of what Lawan is doing to her is all the added stimulus I need in addition to Candace quickly beating fist. I don’t even have to tell her I’m cumming when just as I’m going to erupt she dives her head underneath the water and seals her mouth over my cock in an airtight seal.

Yui and I cum in shrieking unison as I thrust my hips into Candace’s face as I pump my seed into her mouth and down her swallowing throat. Her lung capacity is impressive as both Yui and I experience paired long and extremely loud orgasms. Piya’s face one of smug satisfaction as Yui loses her bet in an exceptionally loud fashion.

As our twin peaks fade I feel Candace take one last suck upon the head of my cock as she rises up from underneath the water. “Delicious,” she tells me as she presses her lips to mine, her tongue giving me the taste of my own cum. The saltiness of the water matched by the same taste of my own juices.

Yui comes crashing back down from her bent back plank position just as Lawan lets go of her hair. Not without some ****, she pushes Lawan away from her super stimulated sex saying, “that’s enough! That’s enough!”

“So, I’m the winner?” Piya asks gloating.

“Yes, you win!” Yui caves in defeat before mumbling a caring, “fucking bitch,” under her breath.

Piya whoops in victory and scoops Lawan up in a hug twirling her around and around, saying, “we did it! We are the champions!” as I take in the way the sister's tits look pressed against each other.