The girls were so lost in their own heat that they forgot to be quiet. Their gasps and the sound of their bodies hitting the door eventually drowned out the fading rhythm of the room.
With a loud creak, the door swung wide open. Ran and Serena, who were leaning against it, lost their balance and tumbled onto the bedroom floor.
Instead of hitting the hard wood, they were caught by a pair of strong arms. Ran, still reeling from her first girl-on-girl orgasm, looked up to see Yuu holding them. He was still "hot," his hard cock pointing right at them.
Ran realized with a jolt that her voyeurism had been exposed. Not only that, but Yuu had seen her and Serena together.
She didn't mind him seeing her body—they had done everything but the final act, after all—but the post-orgasmic clarity made her want to run and hide.
Serena felt the opposite. She immediately wrapped herself around Yuu, rubbing her naked, sweaty body against his. She was ready to take over for Sayuri.
Yuu was more than capable of another round, but he had a different priority. He wanted to check the "Destiny Chain."
While he had been finishing inside Sayuri for the fourth time today, he had successfully initiated the chain. The "little Yuu" was still leaking into Serena's mouth as she eagerly began to clean him up, craving the protein after her workout with Ran.
Yuu pushed Serena's head down, thrusting into her throat as he emptied the last of his "rounds" into her. Serena swallowed it all, looking up at him with devouring eyes.
"Ran, come in," Yuu invited.
Ran hesitated but eventually nodded and stepped inside. She didn't want to be left alone in the living room. She closed and locked the door behind her.
By the time she turned around, Yuu was already sliding into Serena. Watching her best friend get taken by the man she loved was a massive shock to Ran's system. The fire she thought had died down flared up again. Her panties felt like a wet rag.
Deciding she was done with being uncomfortable, Ran stripped off her uniform and panties, hanging them up to dry alongside Serena's.
"Ran, come sit with us," Serena chirped. She was so used to Yuu now that she could almost talk normally while he moved inside her.
Yuu wasn't in a rush to finish. He wanted to observe Sayuri.
The Destiny Chain was different from the Destiny Contract. It couldn't be hidden or moved; it was permanently fixed to the inner thigh. It was a deep pink color, looking less like a chain and more like a delicate, circular lace garter.
It was incredibly erotic—to see the mark, you had to see the soft, white swell of her mound. Yuu was satisfied. He knew the chain could be overridden by a full contract later, so he could use it as a "placeholder" for beautiful women he didn't want to lose.
Suddenly, Sayuri stirred. Her eyes were glassy as she regained consciousness. She blinked, and then her eyes went wide.
She saw three pairs of eyes staring intently at her crotch.
She shrieked and pulled her legs together, scrambling backward on the bed. It was a natural reaction to waking up and finding three people studying your pussy like a science experiment.
She realized Yuu was currently balls-deep in Serena, who was staring at Sayuri's inner thigh despite being humped senseless.
"Ms. Matsumoto, you're awake," Ran said softly.
Sayuri calmed down, realizing the situation. The bed was crowded with four naked people—one man and three women. It was a scene of pure debauchery, and she was right in the middle of it.