Within moments Rimuru's smooth pelvis parted with a pink lining, a wrinkly spot appeared a little behind it and formed his anus: tight.
"I probably won't be able to fit even a finger," Shuna mumbled. "Why didn't you form a clitoris?"
"Oh right."
Next a nubbin formed just above the newly formed slit. "You still have your hymen too. I suppose that's fine. Not like I'll be penetrating you." Shuna struck a smug grin.
Rimuru gulped and before long fell on his behind with Shuna on top. "I'm… scared," Rimuru eventually confessed. He wasn't scared. He was just anxious.
This was going to be his first time. The moment he transitioned into a girl's body, the new hormones, the new sensations were overwhelming his natural senses. And now, this uncertainty, this new organ, this new odd sensation between his legs…
"Don't be," Shuna mumbled, giving Rimuru a kiss and tracing her fingers around his nipples, but never quite touching them.
Rimuru kissed back. The residual heat in his body slowly, slowly burned even hotter and his chest was on fire. His tingly crotch was hot and he could have sworn he had a phantom erection, or at least that's what it felt like.
"Ahh!" Suddenly Rimuru's whole body jolted with a very, very strong sensation between his legs. Like something grabbed his rock-hard cock and gave a solid stroke.
But no, it was just Shuna's fingers having touched Rimuru's clit.
"Did that hurt?" Shuna said.
"No, just weird."
"I know," Shuna giggled. "Happened to be the first time too. It's funny. I actually randomly discovered masturbation in a bathtub. I was alone and washing and when I was cleaning my vagina, for some reason rubbing the clitoris felt really good and I kept rubbing and rubbing and after about five minutes I came. I think mom saw me but she pretended like she didn't." She kept laughing.
Rimuru also tried to laugh but his laughs were getting muffled along with the moans, he so desperately tried to keep within. Embarrassing….
He used to think girls moaned loudly just to please guys. And he was perhaps sort of right. Some girls did do that. However, as Rimuru now understood, a lot of the times the sensory extravagance forced the moans out. "Ah, I feel like something's building. Like I'm about to pee!"
Meanwhile Shuna didn't bother and just played around with Rimuru's clit, massaging one boob, and one nipple, all the while kissing and messing up his moans. "That's normal. Relax and it'll be pleasurable."
Rimuru tried to but how could he relax under so much stimulation, so much pleasure, so much- "AHH!!!" He screamed as an electric shock originated and spread throughout his body, coursing over and over again in waves, totally overshadowing everything else in existence… for about a minute. Like an ejaculation something did come out, a single drop of transparent liquid.
He kept panting… and panting, unable to form any words.
"Wow," Shuna said. "You came so fast."
"Do-do you feel like that every time?" Rimuru managed.
"Yeah. But you know," Shuna mumbled. "I usually get stronger orgasms when it's you," she winked, taking off her skirt and showing Rimuru that pink dripping pussy. "Would you do the honors? I wanted to teach you how to lick but… I don't think I'll have the patience to."
Rimuru gulped but- "Yeah," kissed her, did the same boob massage and same clit play- "Only afterwards though."
Time for some revenge. Buzz! With a vibrating finger. "AH!"