"M-Mia, are you sure about this?" Maya asked hesitantly as her older sister gently eased her onto a bench. The night was still, and chilly. But if they were really gonna do this, Maya knew she wouldn't be cold for long.

"Relax, it'll be fine. I promise you, it'll be worth it for how exciting it is~" Mia said with a sly grin as she knelt down and raised her hands up towards Maya's skirt. Maya's nervousness only continued to grow and she looked around frantically, expecting someone to be hiding somewhere watching as Mia reached under and hooked her thumbs into the waistband of Maya's panties, and began tugging them down.

Maya knew what they were doing was wrong in so many ways, but ever since that first time, Maya had been unable to deny just how good it felt, and she wanted more. But when Mia had suggested something more...daring, Maya had become apprehensive, but agreed. But now that they were actually here-

"There we go~" Mia said as she removed the panties completely and set them down on the bench next to Maya. Maya felt a breeze tickle her lower lips, making her shiver. "Hey, look at me." Maya looked up to meet her sister's eyes. She was always surprised to see just how much confidence she could see within them. "It'll be alright, trust me." That was the thing, wasn't it? Maya trusted her more than anybody else in the world.

"Um…" Maya started, her face burning as she tried to make a request.

"Yes?" Mia asked.

"C-can you...s-strip first?" Maya asked, no longer looking Mia in the eyes. "I think that would make me feel better…" Mia laughed, and nodded. She stood up, and started unzipping her jacket. Maya looked up and watched as Mia removed the jacket, setting it on Maya's other side, and then swiftly removed her shirt as well. As she pulled it up, her large breasts bounced slightly within their black, lacy confines. Maya had never been one to be jealous of her relatively smaller chest size in comparison to her sister's, and was more than happy to see them again.

But first, Mia undid her skirt, and let it fall to the ground. Then she reached behind her back and, giving Maya a small grin, she undid the bra and let it slide off her body, finally releasing her large bust, causing them to bounce once more. Maya felt a stirring down below already as she stared at Mia's beautiful chest, as well as their hardened pink peaks.

But what really got to her was when Mia bent over slightly, causing her breasts to hang down, and smiled at Maya as she pulled her panties down to the ground before stepping out and throwing them over with her other clothes. She stood back up once more, and Maya was able to once again look upon her sister's nude form.

Immediately her eyes shot to her crotch, where the lack of hair left everything on display, which Maya very much appreciated. She also had to admit, seeing her sister naked in a place like this was definitely turning her on in a way she'd never experienced before.

"Happy~?" Mia said as she twirled in a circle, getting the chance to show off her glorious ass to Maya, who blushed as she stared at it. Once she was facing Maya again, she leaned down, getting up close to her. "Now then, it's your turn~"

"O-okay…" Maya said, unable to tear her eyes away from Mia, who was mere inches from her and closing the distance. With shaky hands, she started to mess with the ribbon on her dress, but Mia grabbed her hands.

"Let me do it~" Mia said, and without warning, embraced Maya in a deep kiss. Maya squeaked a bit in surprise, but soon she let herself get lost in the kiss. Her lips were soft and warm, just as always. They felt so wrong yet so right.

Meanwhile, Mia instead was the one who undid the large ribbon holding Maya's outfit together, swiftly undoing it as she had a dozen times already. Without breaking the kiss, Mia slipped off Maya's purple outer layer before she opened up the dress completely. Maya suddenly pulled away with a gasp as she felt her pussy become fully revealed as well as her bra-clad chest. Her hands immediately shot to cover her private area, her face as red as a tomato.

"Hey, what did I say?" Mia said, her voice soothing and calm. "It'll be alright, I promise." Maya sat in silence for a while before she sighed and nodded. She allowed Mia to pull her hands away before Mia slid her own hand down between Maya's legs. Mia began to kiss her once more as she used her other hand to reach behind Maya's back and work at her bra. Mia began to trace a circle around Maya's crotch, and she took great satisfaction at the feeling of Maya shaking underneath her.

Maya was overwhelmed by embarrassment at the fact of being nearly naked in such a public place, even if it was under the cover of night. They were still within the glow of a nearby streetlight, and if anybody showed up, they'd definitely be seen. Yet, that only helped further her arousal as Mia gently moved her finger to Maya's clit and started caressing it. Meanwhile, Maya was impressed when Mia was able to undo her bra with one hand and pull it off her body. Maya let her sister pull her clothes away, leaving her now fully nude in public, which was terrifying, yet thrilling beyond words. Mia pulled away from the kiss, which disappointed Maya.

"See, I told you, you're already wet~" Mia cooed as she gently rubbed Maya's clit. Maya simply nodded, then moaned as Mia pressed harder against her with her finger, then slid the finger inside with a squishing sound. At the same time, Mia raised her hand up and gently cupped it around one of Maya's breasts. Maya moaned as Mia gave it a squeeze. "As soft as ever~" Mia said, enjoying how the warm flesh felt against her fingers. Sure, they were big enough to truly squeeze like how Maya could squeeze Mia's chest, but that didn't really matter much to Mia. Maya's chest had a charm and beauty to them that was unmatched, and Mia loved to grope them all the same.

Mia's finger became coated in Maya's juices as she thrusted her finger in and out of her pussy, reveling in the moans her sister made. Her sister didn't have as much stamina as she did, but that was okay. Mia had decided to make this about her, she could relieve herself later—Maya was the main focus right now.

Mia gently inserted a second finger, making Maya shiver and shake with arousal as her body arched, almost as if she was trying to bring her body closer to Mia. Mia had gotten good at telling when Maya was about to cum, so when she saw the signs, Mia shoved her fingers deep inside as she pinched Maya's nipple and twisted it. Maya nearly screamed in pleasure as she erupted, shooting her cum out onto Mia's hand as her body was rocked by waves of pleasure. Mia simply smiled and watched as Maya came and came until there was nothing left, and once that happened, she settled back onto the bench. Her breathing was heavy and her cheeks were flushed. Sweat dotted her forehead. Mia pulled her fingers out and put them inside her mouth, sucking on the sweet nectar before licking her lips.

"Let's get dressed and go home." Mia said, and Maya looked up at her.

"What?" She asked. Mia felt the urge to kiss her again as she looked down at Maya's face, but resisted. "What about...you?"

"It'll be fine. Tonight was about you." Mia said, and smiled again. "You can make it up to me later~" she said with a wink, causing Maya to blush more. Mia gathered up her clothes, then stopped as she saw Maya's. Mia grinned wickedly as she quickly got dressed, and then picked up Maya's clothes.

"What are you doing?" Maya asked, frowning. Mia simply winked at her again before she turned and started to walk away. Maya gasped as she quickly got to her feet, nearly falling over on her shaky legs. "W-wait! Stop!" Maya started to run after her, her chest bouncing slightly with every step. Seeing her begin to chase her, Mia picked up her pace, and Maya was left chasing her sister naked through the dark streets.