Eun Bin
Copyright© 2025 by Megumi Kashuahara
Chapter 5: Understanding
Young Adult Sex Story: Chapter 5: Understanding - Sometimes, for unexplainable reasons, two misfit girls: one intersex the other permenantly denied puberty. are brought together and find happiness together that defies logic. This is a story about two such people.
Caution: This Young Adult Sex Story contains strong sexual content, including ft/ft Romantic Lesbian School White Female Oriental Female First Masturbation Oral Sex Petting Small Breasts
Saturday morning arrived with golden sunlight streaming through their window. Simone woke first, as usual, with Eun Bin curled against her side like a small, warm cat. She smiled, pressing a kiss to the top of Eun Bin’s head.
“Morning, beautiful,” she murmured.
Eun Bin stirred, blinking sleepily. “Morning.” She stretched, then smiled up at Simone. “I had the best dream.”
“Yeah? What about?”
“Us. Just ... us being happy together.” Eun Bin’s cheeks pinked slightly. “And maybe doing more than just sleeping.”
Simone felt heat curl in her belly. “Oh yeah?”
“Maybe.” Eun Bin bit her lip, looking adorably shy. “Is that okay? To think about that?”
“It’s more than okay. I think about it too.” Simone stroked her hair. “But we don’t have to rush anything.”
“I know. But I want to ... eventually. I want to know what it’s like. With you.”
They lay there for a moment, the weight of that admission hanging between them.
“Actually,” Simone said, sitting up, “before we do anything today, we need to handle something practical. Your uniform.”
Eun Bin groaned. “Don’t remind me. I look like I’m drowning in it.”
“Which is why we’re going to the school office and getting it fixed. This is an elite school—they have tailoring services. They should have measured you properly in the first place.”
“Really? They can do that?”
“Absolutely. Come on, let’s get dressed and go before the office closes for the weekend.”
An hour later, they were standing in the administrative office. The woman behind the desk—Madame Tremblay, according to her nameplate—looked up with a polite smile.
“Good morning, girls. How can I help you?”
“Hi,” Simone said confidently. “My roommate’s uniform doesn’t fit properly. We need to have it tailored.”
Madame Tremblay looked at Eun Bin, taking in her tiny frame and the way she was practically swimming in her weekend clothes. “Ah, I see. Miss Park, correct?”
Eun Bin nodded nervously.
“Come with me, dear. We have a seamstress on staff for exactly this reason.” She stood and gestured for them to follow.
They were led to a small room where an older woman with measuring tape around her neck greeted them warmly. “Bonjour! I am Madame Laurent. You need alterations, yes?”
“Yes, please,” Eun Bin said quietly.
“No problem, no problem. Let me see the uniform.”
Eun Bin pulled out the skirt, blouse, and blazer from the bag she’d brought. Madame Laurent examined them with a critical eye.
“These are much too large. Did no one measure you properly?”
“I ... I think they just gave me the smallest size they had,” Eun Bin admitted.
“Well, that won’t do. Stand here, please.” Madame Laurent began taking measurements—waist, hips, inseam, shoulders, arm length. She made notes quickly, her movements efficient and professional.
“You are very petite,” she said matter-of-factly, with no judgment in her tone. “But that is no problem. I will take these in properly. The skirt will sit at your natural waist, the blazer will fit your shoulders, the sleeves will be the right length. You will look très chic.”
Eun Bin’s face lit up. “Really?”
“Of course! Every girl deserves a uniform that fits properly. You will have them back by Monday morning. I will have them delivered to your room.”
“Thank you so much,” Eun Bin said, her voice thick with emotion.
After they left the office, walking back toward their dorm, Eun Bin was practically glowing.
“That was amazing,” she said. “She didn’t make me feel weird or embarrassed at all.”
“Because there’s nothing to be embarrassed about. You just needed the right size.” Simone squeezed her hand. “This is what a good school does—they accommodate everyone.”
“I’ve never felt accommodated before. Usually people just ... ignore my needs because I’m different.”
“Not here. Not anymore.” Simone pulled her close. “And definitely not with me.”
Back in their room, they changed into comfortable clothes—shorts and t-shirts for Simone, leggings and an oversized hoodie for Eun Bin. It was still morning, and they had the whole day ahead of them.
“What do you want to do today?” Simone asked, flopping onto Eun Bin’s bed.
“I don’t know. Stay here? Just ... be together?” Eun Bin climbed onto the bed beside her. “I like when it’s just us.”
“Me too.” Simone pulled her close, and Eun Bin settled against her side naturally.
They lay like that for a while, just talking—about classes, about other students they’d met, about nothing in particular. But there was an undercurrent of tension, of unspoken desire building between them.
Finally, Eun Bin shifted, propping herself up on one elbow to look at Simone. “Can I kiss you?”
“You never have to ask.”
Eun Bin leaned down, pressing her lips to Simone’s. The kiss started soft, tentative, but quickly deepened. Simone’s hand came up to cup the back of Eun Bin’s head, holding her close as their mouths moved together.
When Eun Bin’s tongue tentatively touched Simone’s lower lip, Simone opened her mouth, inviting her in. Their tongues met, sliding against each other, and Eun Bin made a small sound of pleasure.
They kissed for long minutes, learning each other’s rhythms, exploring. Simone’s hands moved to Eun Bin’s waist, pulling her closer. Eun Bin’s hands gripped Simone’s shoulders, then slid into her hair.
When they finally broke apart, both were breathing hard.
“Wow,” Eun Bin breathed. “That was ... wow.”
“Yeah.” Simone’s voice was rough. “That was really good.”
“I can feel it,” Eun Bin said, her cheeks flushing. “Down there. Like ... fluttering. And wet.”
“That’s arousal,” Simone said gently. “That’s your body responding.”
“Is that normal? Even though I’m ... underdeveloped?”
“It’s completely normal. Your body works, Eun Bin. Just because puberty stopped doesn’t mean you can’t feel pleasure.”
“Do you feel it too?”
“Yeah. Definitely.” Simone shifted slightly. “I’m pretty turned on right now.”
Eun Bin bit her lip. “Can I ... can I see? I know we saw each other yesterday, but I want to see ... when you’re aroused. Is that okay?”
Simone’s breath caught. This was it—the moment of real truth. “Yeah. But ... if we’re going to do this, I want to show you everything. I want you to really understand what you’re getting into with me.”
“Okay.” Eun Bin sat up, her expression serious. “Show me.”
Simone stood and pulled off her t-shirt, then her sports bra. Her breasts were already slightly flushed with arousal. Then she pushed down her shorts and underwear in one motion, stepping out of them.
She sat back on the bed, leaning against the headboard. “Come here. Sit facing me.”
Eun Bin positioned herself cross-legged at the foot of the bed, eye-level with Simone’s lap.
Simone took a breath, then spread her legs wide, fully exposing herself.
Her penis was already semi-erect from their kissing—about three and a half inches, thickening, the head partially emerging from the foreskin. Below it, her labia were clearly visible, slightly swollen and glistening with arousal.
“This is me,” Simone said, her voice steady despite her racing heart. “This is what I look like when I’m turned on. It gets harder, bigger. It can reach about four inches fully erect.”
Eun Bin stared, but not with disgust. With fascination. “It’s beautiful,” she whispered.
“It’s a penis. Most people think it’s weird.”
“I don’t.” Eun Bin leaned closer. “Can I ... can I touch it?”
“Yes. Please.”
Eun Bin reached out tentatively, her small hand trembling slightly. Her fingertips brushed the shaft, and Simone gasped.
“Did that hurt?” Eun Bin asked quickly.
“No. God, no. It felt good. Really good.”
Encouraged, Eun Bin touched more confidently. She traced the length of it, her fingers exploring the texture, the warmth. “It’s soft. The skin, I mean. But it’s getting harder.”
“Yeah. That’s what happens.” Simone’s voice was strained. “When I’m aroused, blood flows into it. It becomes erect.”
“Like a regular penis?”
“Exactly like a regular penis. Just smaller.”
Eun Bin’s fingers moved lower, exploring Simone’s labia. “And this is your vagina?”
“Yeah. Everything down there works normally. I can be penetrated. I can have orgasms from that too.”
“So you can feel pleasure both ways?”
“Yes. The penis—my enlarged clitoris—is incredibly sensitive. The head especially. And my vagina is just as sensitive as any other girl’s.”
Eun Bin looked up, meeting Simone’s eyes. “Can I ask you something?”
“Anything.”
“When we ... when we make love eventually ... can you put it inside me? Is it long enough?”
Simone’s heart clenched. This was the question she’d been dreading. “Yes. It’s long enough. At full erection, about four inches. That’s enough to penetrate.”
“Will it feel good for you? I know you said you lost some sensation from surgery—”
“That was wrong,” Simone interrupted. “I looked it up again after I told you. The surgery didn’t affect the head much—that’s where most of the nerves are. So yes, it would feel very good for me.”
“And for me?”
“I think so. You’re small, and you’re a virgin, so we’d have to go slow. Use lubrication. Be patient. But yes, I think it would feel good for you too.”
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