My Masochistic Teacher

She felt him breathing on her face through her hoodie, but this meager response did nothing to ease her anxiety. Instinctively, she tried to pull back, to escape the gust of air, but the collar around her neck sternly denied her movement. Fortunately, it was indeed Lu Zixing, and after ceasing his teasing, he leaned closer to her hooded face and whispered, "Is my little slave enjoying herself all alone, hmm?" Before he finished speaking, a sigh escaped from beneath the hoodie. Liu Yunyin didn't want to respond; hearing his voice was already a release from her torment, though she had no idea what further training this young master had in store for her. Lu Zixing seemed displeased with Liu Yunyin's sigh of relief. Before she could even catch her breath, he suddenly turned the switch on her legs to max and cupped her cherries, beginning his unrestrained play. The overwhelming, mixed stimulation of that moment sent a jolt through Liu Yunyin's entire body. Seizing the opportunity, Lu Zixing thrust himself in, covering Liu Yunyin's nose under the hoodie with one hand while his mouth enveloped her still-throbbing [X], caressing it with his tongue and teeth. The sensation of [X] combined with the stimulation of her chest [X] made her electrified body feel like it was surging with a hundred thousand volts. Unable to control herself any longer, Liu Yunyin cried out, desperately seeking oxygen and the [X] from Lu Zixing's ministrations. Lu Zixing couldn't see that Liu Yunyin's face was turning purple, her eyes rolling back. Her body writhed and bucked against the tight restraints, desperately needing release. Finally, her brain's control gave way, and a torrent of fluid erupted, some of it splashing onto Lu Zixing. At that moment, Lu Zixing stopped, leaving his teeth marks on her tender breast before undoing the hood of her hoodie. Liu Yunyin's purplish face slowly returned to its normal color, and her consciousness gradually returned. Looking at the young master before her, tears streamed down her face uncontrollably. Lu Zixing affectionately stroked Liu Yunyin's head, gently wiping away her tears. He casually turned down the [X] switch and released her from the restraints binding her to the stool. Liu Yunyin stared blankly, her [X] still dripping, while the abandoned men's restroom remained silent. Lu Zixing stood up and looked down at Liu Yunyin, unzipping his pants. Liu Yunyin, still dazed, saw in the dim light the thick, engorged, blood-filled rod before her. She slowly came to her senses, thinking, *Not here, he's not going to...* But Lu Zixing's next words dispelled her fears: "My little slave seems pleased with this gift. I've been enduring quite a bit myself. Tonight, I need to release some of this tension..." Lu Zixing then scooped Liu Yunyin up entirely, stepping on the pile of her [X] on the floor, and moved her from the stall to the already opened suitcase. Liu Yunyin now understood the purpose of the suitcase. Curled up inside, she writhed frantically, her eyes pleading with Lu Zixing. He ignored her, reopened the [X] switch, closed the suitcase, and stood it upright. He had punched many holes in the bottom yesterday, ensuring she wouldn't [X]. Listening to the faint struggles and helpless whimpers from inside the suitcase, Lu Zixing said, "I'll be taking you downstairs soon. You wouldn't want anyone to notice any movement from the suitcase, would you? Be good and quiet. It's a 20-minute drive to your place. You can enjoy yourself a little more then." With that, the movement inside the suitcase stopped. Lu Zixing said with satisfaction, "Good girl," and began to drag the suitcase. Moving Liu Yunyin's 90 pounds was not too difficult for the well-built Lu Zixing. All along the way, Liu Yunyin listened to the familiar sounds of the campus from outside the box, her heart pounding and her face flushing. In the cramped space, her limbs were curled together, and the stimulation from the [X] knots and [X] made her feel dizzy with desire once more. With a jolt different from the descent, Lu Zixing forcefully placed the suitcase in the back seat. He hadn't chosen the trunk for fear of insufficient oxygen. He then looked around; there were few cars or people left in the parking lot. He gently patted the suitcase and said, "Let's go," before heading to the driver's seat. Hearing Lu Zixing's reminder and feeling the slight vibration as the car started to move, Liu Yunyin, bound tightly inside the suitcase, could no longer suppress herself. Strange muffled moans and indistinct moans of pleasure emanated from within. Lu Zixing, in the driver's seat, savored the sounds of his prey, his [X] involuntarily reacting, causing him to accelerate intermittently to relieve the pressure, shortening the 20-minute drive considerably. They soon arrived at the parking lot of Liu Yunyin's upscale apartment. After parking, he went to the back and took out the suitcase. This series of actions made Liu Yunyin inside the box realize they had reached their destination, so she obediently stopped making noise. Lu Zixing, also realizing this, said with satisfaction to the suitcase, "Good girl," and then took the elevator to the apartment door, using her handbag's key to open it. He placed the suitcase by the entrance, temporarily ignoring Liu Yunyin's whimpers, and began to survey the apartment. The spacious living room, minimalist style. After getting a general sense of the layout, he drew the curtains in every room and opened Liu Yunyin's bedroom door, finally liberating her from the suitcase. Liu Yunyin finally saw the light of day, her eyes taking a while to adjust to the living room lights. Lu Zixing made her kneel on the floor, panting like a dog. Liu Yunyin was already drenched in sweat, her bare upper body marked with red and swollen [X] from the bindings, her lower half's tattered yoga pants soaked with sweat and [X]. Her face was defeated, and though she wanted to lower her head, she couldn't. Lu Zixing squatted down, hooked the ring of her collar with his hand, and lifted her head. He inhaled the scent of her sweat and perfume, saying, "My little slave performed well, but we still have much to do." He then dipped his fingertip in her saliva and squeezed her [X] hard before pulling the leash on her collar, dragging Liu Yunyin, half-pulled, half-kneeling, to her bedroom. He then secured her to the foot of the bed with the collar's leash. At this point, he released the restraints on her lower body, allowing her to spread her legs in an indecent pose to relieve her lower limbs. As the blood in her [X] gradually flowed more freely, followed by a stinging sensation like ants gnawing after the numbness, she couldn't help but squint her eyes. Lu Zixing walked over to her and casually removed her gag, pulling out the stuffed, soiled underwear. Liu Yunyin was able to take deep breaths of fresh air, not caring that her mouth was wide open like a bitch, drooling profusely. Lu Zixing then removed the three [X] from her [X]. The moment they detached from her body, Liu Yunyin let out a hazy "Ah," which made Lu Zixing's [X] engorge, and a few drops of [X] trailed from his [X], glistening on the floor. Lu Zixing leaned down, grabbed Liu Yunyin's high ponytail, and forced her to look at him, slowly saying, "Don't you know you look so slutty right now, like a half-dead bitch?" He then lightly patted her beautiful cheek a few times. Liu Yunyin closed her eyes in pain, not responding. He unfastened the collar's leash, roughly pulling her up. Knowing she couldn't stand, he scooped her legs from behind and held her up, facing the mirror on her vanity. He shook her violently, making her look at herself in the mirror. Liu Yunyin saw her legs spread wide in mid-air, her two [X] swollen and round from being constricted, her yoga pants soaked through, and the thick collar adorned with a look of powerlessness, lust, and pain. At this moment, all her self-identity and dignity began to fade. She began to accept her identity as an M in this relationship. This was what she had always wanted deep down, who she wanted to become, what she wanted to experience. Lu Zixing hugged her waist and let her legs down, resting his head on her shoulder. One hand massaged her [X], while the other turned her face to face him. Soon, it was time for dinner. Lu Zixing walked into the kitchen and made himself a sandwich. He didn't prepare any food for Liu Yunyin, but instead spat the last chewed morsel into Liu Yunyin's mouth after removing her gag, letting her savor his reward. Lu Zixing said, "You've eaten breakfast and lunch today, so you don't need to eat anything else." Liu Yunyin hummed and obediently knelt to the side. However, for the sake of her strength, Lu Zixing still fed her a cup of milk, pouring it into Liu Yunyin's mouth bit by bit. The sky outside began to dim. Lu Zixing drew all the curtains and led Liu Yunyin into the training room. He removed her existing restraints and ordered her to take off her latex suit and put on another custom-made one. It was white with black spots, resembling a Dalmatian, and exposed her two nipples. Liu Yunyin complied. Lu Zixing pinched her nipples, making her turn around for him to inspect. Then, he told her to tie up her hair. After these simple preparations, he began to put on the equipment. First, her palms were placed into dog paw-shaped mitts and locked. Inside the mitts, her hands could only be clenched into tight fists. Next, her feet were put into high-heeled boots with locks. Then, protective pads, similar to rollerblading pads, were attached to her elbows and knees. Her arms, elbows, thighs, and calves were then folded and wrapped tightly with wide tape by Lu Zixing, leaving only the paw mitts and high-heeled boots exposed. At this point, the dog-like form was beginning to take shape. Following this, he took out four leather straps from the package that were used to bind her limbs and put them on one by one. Each strap had three leather belts, which Lu Zixing fastened and locked. By now, Liu Yunyin could barely support herself on her four joints, but she was trembling precariously. If she slipped, she would land on her chest and abdomen. To prevent this, Lu Zixing connected her left arm to her right leg and her right arm to her left leg with thin chains in an X-shape. This kept her from slipping and allowed her to crawl forward slowly. Lu Zixing then took out a ring gag and fastened it on Liu Yunyin. He then expertly put on the dog slave hood for Liu Yunyin. The hood perfectly encased Liu Yunyin's head, with only two large holes for her eyes to see through, allowing her to see the path ahead as she crawled. He then locked the hood and took out a thick collar, which he quickly put around her neck. The collar had a bell ball at the throat, which began to jingle. The shameful sound reminded Liu Yunyin that she was now a human-dog, making her feel inexplicably excited. Lu Zixing, satisfied, looked down at the realistic female dog beneath him and smiled, saying there was just a little more equipment. He then took out a four-centimeter-diameter dildo with a furry tail attached. He went behind her, lubricated it, and began to insert the dog tail. Liu Yunyin's anus had been developed a bit more during this period. Although she still writhed from the stimulation of the dildo, Lu Zixing was somewhat displeased. Just as he was about to insert it completely, he took out a riding crop and fiercely whipped her ass. A sharp pain caused her anus to contract, and Liu Yunyin's rear end swallowed the last bit of the dog tail dildo. A pink whip mark immediately appeared on her buttocks, along with a furry dog tail. Now that he was finished, Lu Zixing attached a thin chain to Liu Yunyin's collar. Holding the riding crop in one hand and the chain in the other, he began to half-drag and half-drive Liu Yunyin, making her crawl slowly around the room. He occasionally whipped Liu Yunyin's buttocks, leaving streaks of red marks. Liu Yunyin followed Lu Zixing's commands with humiliation. Every time he raised his hand and brought it down, she would let out a pained yelp. Soon, she began to whimper. Lu Zixing commanded, "Bitch, bark twice." The ring gag made Liu Yunyin emit mournful whimpers and barks. Under the dog slave hood, tears streamed down her face, a mixture of excitement and shame. Lu Zixing then kicked the dog tail inserted in her rear. Her already swollen and painful anus received the impact, causing Liu Yunyin to let out a long, drawn-out whimper. This amused Lu Zixing, who burst into laughter, and then he whipped her nipples again. At this point, Lu Zixing spotted a pair of bell-adorned nipple clamps on the wall. Without a word, he pushed Liu Yunyin to the ground and adjusted the clamps to their tightest setting, stimulating the cherry-like tips of her nipples before clamping them on. The sudden pain and arousal caused Liu Yunyin's restrained limbs to flail in the air. The chains and bells jingled instantly. Amidst this symphony of lustful sounds, he helped the female dog up and led her to the mirror outside the room, ordering her to kneel upright so she could see herself transformed into a bitch in the mirror. He stroked her head and commanded her to vigorously shake the arms that had become front paws and her nipples, which were clamped with the bell-adorned clamps. Liu Yunyin looked at her debased self in the mirror and became even more excited. Lu Zixing then took out a dog tag for the female dog Yunyin and attached it to her collar. Seeing the prefix "female dog" before his name, Liu Yunyin could no longer control herself, and her pussy became mostly wet.