High School DxD:Milking System World

Chapter 4: CH 4



To begin, Jin activated Lactation Fog once again to ensure that Aika would be able to produce milk.

As far as he knew, Aika was still a virgin. She had certainly never been pregnant, so naturally, she had never lactated before. Not fully understanding how a woman's body produced milk, Jin used the Lactation Fog to its fullest, filling the room with the invisible pink mist.

Aika looked at Jin with feverish eyes. Her braided hair was now loose, making her look even more beautiful than before. Her glasses were gone, along with her clothes—erased by Jin when he transformed the room.

Perhaps the pheromones in the fog were working, but Jin didn't believe that was the only reason. In truth, Aika had always been beautiful—at least when she wasn't saying anything perverted. Jin had always thought so.

Leaning closer, he whispered into her ear, his breath hot against her skin.

"Are you ready for your milking session?"

"Ugh… P-Please don't tease me… Even I'm still a girl, you know…"

"I know." Jin pulled back slightly, meeting her gaze.

Aika panted softly, anticipation evident in her eyes. Something inside Jin stirred—his instincts as a man rising to the surface. Although his main goal was to drink milk and extend his lifespan, who said he couldn't enjoy himself in the process?

Still, his priority was leveling up the System. Thirty minutes wasn't much time, and he wanted to increase that limit before doing anything beyond milking. For now, he needed milk.

Without hesitation, Jin placed his hands on Aika's breasts and gave them a firm squeeze.

"Kya!" Aika gasped, startled but not displeased. Instead, she arched her back slightly, pushing her chest into his hands as if urging him to continue.

Jin didn't hold back. He squeezed harder, kneading the soft mounds with both hands. They fit perfectly in his palms, and Aika moaned with each squeeze, her pleasure evident.

"Hnn… There… You can be rougher, Jin…"

"You don't have to tell me twice," he replied with a smirk.

As he continued to knead her breasts, Jin's left hand began to explore the rest of her body, while his right hand remained focused on stimulating her breasts. Even with the fog's effects, lactation wouldn't happen instantly—he needed to stimulate her enough to trigger the first gush of milk.

Minutes passed, filled with Aika's moans and heavy breathing. Jin used Golden Hand to amplify her pleasure, kneading and massaging her breasts with expert precision. The fog worked in tandem with his touch, pushing her body closer and closer to producing milk.

Her moans grew louder, her chest rising and falling rapidly as pleasure coursed through her veins. Jin grinned as he watched her squirm beneath his touch—but despite her reactions, he felt a growing impatience.

'How long do I have to keep this up before she starts lactating?' Jin thought.

Driven by both his desire and the pressure of time, he leaned down and took her nipple into his mouth without warning.

"Ahn! S-So sudden!" Aika gasped, but Jin ignored her.

With her hands tied, she couldn't stop him even if she wanted to. And in this room, Jin was in complete control.

'Right now, she's just a cow ready to be milked.'

Jin's tongue swirled around her nipple as he sucked firmly, pulling her sensitive flesh into his mouth. Meanwhile, his hands kneaded her breasts even harder, squeezing and massaging with a mix of pleasure and pressure.

"AH! I-It hurts—ahhn!" Aika cried out, though her moans betrayed the pleasure mixed with the slight discomfort.

Finally, a few drops of white liquid began to seep from her nipple.

"Huh? W-What is this? Ahn… T-This is—!"

Jin pulled back slightly, a satisfied grin on his face.

"Oh? Looks like you're starting to lactate," he teased, squeezing her breasts more vigorously. With each squeeze, more milk squirted from her nipples in thin streams, creating an enticing display.

Without waiting any longer, Jin leaned back down and latched onto her breast, eagerly drinking the warm milk that flowed into his mouth.

'It's sweet…' he thought as he swallowed, feeling a surge of energy with each gulp.

The room echoed with the sounds of Aika's moans and Jin's gulping as he continued to drink.

[You have drunk a mouthful of milk. Your lifespan has increased by 3 days. You gained 3 EXP.]

[You have drunk a mouthful of milk. Your lifespan has increased by 3 days. You gained 3 EXP.]

[You have drunk a mouthful of milk. Your lifespan has increased by 3 days. You gained 3 EXP.]

[You have gained the skill: Basic Mathematics from Kiryuu Aika.]

[You have gained the skill: Size Scouter (Breasts) from Kiryuu Aika.]

A long blue panel appeared beside him, listing the notifications.

'Two skills, huh?' Jin mused. Although they weren't combat skills, both had their uses—especially Size Scouter (Breasts), which would help him identify the best candidates for milking. He recalled Aika bragging about her ability to estimate a man's size, but it seemed the System had modified that skill to focus on breasts instead.

'Useful,' Jin thought as he continued drinking.

Aika's moans grew more erratic as her body convulsed beneath him. Her legs kicked slightly, but she didn't resist—instead, she continued to squirt both milk and love juices, overwhelmed by pleasure. Her eyes had glazed over, her mind consumed by the sensations flooding her body.

"I-I feel so strange! I-It's too good! I'm—I'm cumming! I'm cumming!!" Aika cried out as her body arched off the bed, her orgasm hitting her hard.

Jin pulled away from her nipple just as her climax peaked, leaving a thin trail of saliva connecting his lips to her nipple. By now, the milk had stopped flowing, signaling that she was temporarily empty.

Satisfied, Jin sat back and wiped his mouth, feeling the warm energy of the milk spreading through his body.

'One mouthful equals three days of life… and I drank a lot more than just one mouthful. Not bad.'

[Ding! The Milking Room will disappear in 30 seconds! Finish your business before it disappears!]

"Huh? Already?" Jin blinked in surprise. 'Did I really spend 30 minutes just drinking from her?'

He glanced down at Aika's flushed, sweat-covered body. Her chest rose and fell rapidly as she panted, her body still trembling from the intense pleasure. Sweat and breast milk covered her skin, while her crotch was soaked from her release. The bed beneath her was similarly wet, a mixture of sweat, milk, and love juices soaking into the sheets.

"Haa… T-That was amazing…" Aika murmured, her gaze hazy but filled with affection as she looked up at Jin.

Jin offered her a small smile but said nothing. She would forget everything that had happened in the room—he had ensured that when activating the skill. Until he gained enough strength to defend himself, he needed to keep his System a secret.

"Did you have fun, Aika?" Jin asked softly, glancing at the countdown that had reached 10 seconds.

"Yes… That was incredible, Jin… But where are we?" She looked around with confusion, her mind slowly returning to clarity.

"It doesn't matter anymore," Jin replied with a calm smile. "Because you're about to forget everything. Good night, Aika."

"Huh?"

Before she could say anything else, the room vanished, leaving them back in the park as if nothing had happened. Aika sat on the bench with Jin standing behind her, both fully clothed once more.

For a moment, she looked at Jin with a blank expression before blinking and shaking her head.

"Huh? What was I… doing?" she asked, tilting her head in confusion.

"You must've fallen asleep," Jin replied with a smile. "Why don't we call it a day? I'll walk you home."

"Good idea…" Aika yawned, rubbing her eyes. "I must've been more tired than I thought."

"Let's go," Jin said, offering her his hand.

"Thanks, Jin. You're so sweet," Aika replied, taking his hand with a smile.

As they walked, Jin discreetly glanced at the floating panel that displayed his current status.

Exp Needed to Level Up: 137/5000

Lifespan Left: 0Y 9M 5D

His lifespan had increased by three months and three days, meaning he had drunk around thirty-one mouthfuls of milk. His EXP had also risen significantly, bringing him closer to leveling up.

'Not bad for a first time,' Jin thought, suppressing a grin. 'I could definitely get addicted to this.'


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