The directness of the question about her breasts, coupled with the intimate touch, was almost overwhelming. 

She couldn't help but think, "Is this how women converse with each other?"

Yet, a part of her, the Su Mu who was increasingly embracing this new life as a woman, found an unexpected thrill. 

With a playful smile, she decided to play along, appreciating Xu'er's audacious approach.

"Well, sister, I suppose it's a mix of good genes, right?" Su Mu replied, her tone teasing, though a slight tremor in her voice betrayed her racing pulse. 

She allowed Xu'er to continue her playful attempts on her body, finding an unexpected, pleasant warmth sweeping through her as Xu'er's fingers gently kneaded the side of her breast through the leather. 

The sensation was both foreign and incredibly stimulating.

"No fair! I also like to have such a large bust!" Xu'er exclaimed, her playful protest echoing softly in the changing room. 

Her lips brushed against Su Mu's exposed shoulder as she spoke, sending another wave of shivers down Su Mu's arm.

"No, sister, you also have a large and beautiful bust!" Su Mu exclaimed, joining in the playful banter, though her gaze instinctively flickered to Xu'er's prominent curves visible through the sheer red lace.

"Yeah, but I want them to be as big and beautiful as yours," Xu'er retorted, while continuing her teasing. 

Then, her actions took a bolder turn. She pressed a soft, lingering kiss to the exposed skin of Su Mu's back, just below her neck, while her hands continued their gentle exploration of Su Mu's breasts, her thumbs now lightly tracing the upper curve where they swelled above the corset.

"Ahaa..." The unexpected kiss, a feather-light touch that was somehow incredibly potent, coupled with the playful, possessive touch on Su Mu's half-exposed breasts, sent a sharp shiver down her spine, eliciting a soft, involuntary moan. 

Caught completely off guard by the directness and the flood of sensation, she instinctively covered her mouth with her hands, her emerald eyes widening with a mix of surprise and undeniable pleasure.

Xu'er, seemingly undeterred and perhaps even encouraged by Su Mu's reaction, continued to playfully tease. 

She leaned her chin on Su Mu's shoulder, her voice a warm whisper against her ear. 

"Seems like I've found a sensitive spot, missy," she remarked with a mischievous grin, her hands still gently covering Su Mu's breasts. 

The warmth of her palms was a stark contrast to the cool leather, a sensation that was rapidly becoming addictive.

Her mind was a whirlwind; part of her wanted to pull away, to assert some boundary, but another, much louder part was captivated.

While processing the unexpected intimacy and the tingling aftereffect of the kiss, she offered another playful yet slightly flustered response. 

"Well, I suppose each has its own charm, don't you think?" Su Mu replied, attempting to steer the conversation toward a lighter note, though the lingering warmth of Xu'er's touch and the scent made her voice a little breathy.

Xu'er chuckled, a soft, knowing sound. "Oh, I wasn't talking about these, though yours are quite magnificent." 

She then leaned away slightly, and Su Mu felt a brief sense of loss at the withdrawal of her warmth, only for Xu'er to reach for something just out of Su Mu's line of sight. 

"I didn't mean them, but this," she spoke, her voice dropping into a playfully suggestive tone. 

She turned back, holding up a gleaming, vibrant dark purple strap-on dildo. 

It was smoothly sculpted, unmistakably phallic, and seemed to almost glow in the soft light of the room.

The unexpected item brought a renewed intensity to the atmosphere. 

Su Mu found herself momentarily speechless, her eyes widening in a mix of surprise, uncertainty, and a sudden, sharp spike of curiosity. 

Her mind flashed back to the products Mei Lin had shown her earlier, things that could use spiritual power as energy to intensify the pleasures. 

Mostly suitable for awakeners with enhanced senses. This one, in the hands of Xu'er, looked sleek, modern, and undeniably powerful.

Xu'er, undeterred by the pause, raised an eyebrow playfully, her lips curved into a knowing smirk. 

"Well, Missy, what do you think? Ready to explore a bit more?" she asked, her voice a silken invitation, her gaze holding Su Mu's with an intensity that was enticing.

"Uh, that's... is that a... a strap-on?" Su Mu stammered; her attempt at maintaining composure completely backfired. 

Her cheeks, which had just begun to cool, flamed anew. 

The Su Yang part of her brain was reeling with a combination of shock and a disbelieving, almost comical sense of "What is happening?!". 

But the Su Mu part, the one who had felt the stirrings of new desires, the one who had been pleasured by Lingxi and was now undeniably drawn to this captivating half-Succubus, felt a jolt of something similar to nervous excitement.

Xu'er, undeterred, maintained her playful expression, seemingly enjoying the surprise she had elicited from the beautiful young woman in front of her. 

She twirled the purple device slowly in her hand, the light catching its polished surface. 

"Indeed, it is," she purred. "And a very popular model.. Good for beginners, and for those who like to… share the experience." Her gaze flickered meaningfully between Su Mu and the strap-on, then back to Su Mu's eyes, a silent, tempting question hanging in the small changing room.

Su Mu's gaze also shifted from the gleaming purple strap-on to Xu'er's intensely playful eyes, her heart beginning to skip a beat – no, it was doing a full acrobatic routine – as she looked at the toy, then back at the half-Succubus who seemed entirely at practiced ease.

"Don't tell me you're still a virgin?" However, Xu'er's sudden question, delivered with a knowing lilt, hung in the air, sharp and unexpected. 

A fresh, fiery blush crept onto Su Mu's cheeks, hotter than before. 

She stammered, her mind racing, "W-well, that's... that's a bit personal" 

She tried to sound casual, but her voice was a little too high and breathless.

The truth was, as Su Yang, he had been a virgin; he did get multiple chances in his last life, but wasn't able to grasp them, as he was working day and night for a game development company.

As Su Mu, the concept was… complicated by her recent awakening and the encounter with Lingxi. But explaining that was an entirely different level of exposure.

"Ha haa...." Xu'er's laughter echoed through the small changing room. It wasn't mocking, but it made Su Mu feel even more transparent.

Just as Xu'er leaned in again, both heard a voice from outside.

"Xu'er, stop teasing her. You girls, come out!" The voice of Li Wei resonated from outside the changing room. 

Before any further intimate moments could unfold, or Su Mu could formulate a coherent response or the unspoken implications of the purple toy, Xu'er visibly halted her teasing of Su Mu. 

She released Su Mu from her embrace with a playful, exaggerated sigh, the warmth of her body lingering like an imprint as she stepped back. 

The strap-on was casually placed on the small stool beside them.

Then, with a sudden, intense look that made Su Mu's breath catch all over again, Xu'er leaned forward, her face mere inches from Su Mu's. 

Her purplish eyes were serious for a moment, yet held that same captivating, possessive spark. 

"I love you, Missy," she whispered, the words both shockingly direct and strangely thrilling. Before Su Mu could even begin to process the declaration, Xu'er's playful smirk returned, wider than before. "You're mine!"