˜*°•.Chapter Content.•°*˜
Sex toys, Bondage/Rope, Rough, Masochism, Marking (Is that what it's called?).
Word count: 1721
˜*°•.˜*°•🍋•°*˜.•°*˜
"The ropes are, um, a bit tight," Rantaro muttered. Shuichi smirked as he watched Kokichi tying up their boyfriend to the bed with one limb per post.
"Well, they're not digging into your skin and you're not turning purple," Kokichi joked. "I'll loosen them if you want though." Reaching out to retie the ropes, Kokichi paused as Rantaro shook his head.
"No, it's fine. They're not bad," Rantaro muttered with pink cheeks.
Shuichi tucked a lock of green hair behind Rantaro's ear, leaning down to kiss his soft lips. "Remember to use the safe word. You can use it any time, we're not going to do anything you don't like."
"You care too much about us Sai, thank you," Rantaro chuckled. "I haven't changed my mind."
"If you do, it's perfectly fine," Shuichi smiled before planting another kiss on Rantaro's lips. Stripping his clothes to match the other two, Shuichi picked up a vibrating dildo Rantaro had asked to use when he suggested the activity. They'd watched Rantaro prepare himself earlier so Shuichi slowly pushed it inside of the tied-up male.
Rantaro let out a low groan, closing his eyes as his head leant back. The pink tint on his cheeks had started diminishing now, leaving Rantaro's skin as his usual, toned tint. Shuichi continued to push the toy further until it completely sat inside the greenette who breathed heavily as he adjusted. It wasn't like the dildo was massive, however, it couldn't be considered a small size by any means. Perhaps average, like Shuichi and Kokichi.
Kokichi continued to play with an object on the bed, setting it up to use it against Rantaro as he'd requested. "I think I'm ready," Rantaro whispered. Shuichi smiled at him and grabbed the base of the toy, pulling it out and slowly pushing the silicon object in again. As he did, Rantaro moaned and pulled on the ropes tying his wrists.
Satisfied that Rantaro was alright to continue, Shuichi grabbed a remote sitting atop the bedside. Small enough to sit in the palm of his hand, Shuichi didn't want to lose it by throwing it onto the bed. Turning it to the lowest setting, Shuichi chuckled at Rantaro's moan as he rubbed his thighs together, a faint buzzing coming from the male.
"I'm going to start too, okay?" Kokichi warned the greenette. Gripping the small, black whip, Kokichi gently flicked it onto the outside of Rantaro's thigh. Rantaro's back arched upon impact, a moan emanating from his throat. "Too much?"
"Fuck no!" Rantaro shouted as he squirmed around, the restraints making it difficult. "Harder!"
Shuichi and Kokichi smirked at each other as the purplette continued to strike Rantaro's thighs with the whip. Whilst discussing the step in their relationship, Shuichi had been hesitant to hurt their boyfriend so Kokichi had decided to use the whip alone. He was terrified of hurting the others, Shuichi would never forgive himself if he upset either Rantaro or Kokichi. Despite worrying about the others' safety, Shuichi revelled in Rantaro's moans of gold.
Realising Rantaro enjoyed the treatment, Shuichi gripped the remote in his hand and leaned over his boyfriend. Licking up Rantaro's neck, Shuichi planted a soft kiss on his smooth skin before sucking harshly. Having an urge to mess with the other, he flicked the remote to the second speed setting out of the four.
Sucking on multiple parts of Rantaro's neck and collarbone, Shuichi knew the marks would grow deep purple the next day. Rantaro had revealed during the first time the three had sex that he liked being littered with hickeys and didn't care to hide them. He preferred people knowing that he belonged to another, something he'd admitted with great embarrassment. Little did strangers know that he belonged to two people, not just one. Admittedly, Shuichi loved seeing the little reminders on his boyfriend for a few days after.

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90 Day Saioumami Challenge
FanfictionA collection of stories for Saihara Shuichi x Ouma Kokichi x Amami Rantaro. This ship doesn't have enough stories, so here are 90 more. Contains fluff, angst and smut stories. Any necessary trigger warnings will appear at the beginning of each stor...