My Succubus Harem System In The Reverse World

They moved deeper for a few more minutes, cutting down the smaller, faster clusters that tried to intercept them.

Rei fought with controlled, efficient strikes this time, refusing to open both palms again. The twin axes stayed modest in size. She would not waste the remaining window.

Then the timer hit zero as the cave dissolved.

The sensation of falling lasted less than a second. One moment she was standing on wet stone; the next she was lying on the reinforced simulation sofa, the neural helmet still locked over her head.

The restraints released with a soft click.

Ruby was the first to sit up, gasping as she yanked the helmet off.

"That was so real," she said, voice shaking with leftover adrenaline.

"I could still taste the mineral water."

Saber removed her own helmet more calmly and offered a small nod.

"The sensory feedback has improved since the last version. Almost no lag."

Revien sat up last, running a hand through his hair. He looked at the three of them with the same unreadable expression he had worn inside the simulation.

"We did well."

Rei remained lying on the sofa for a few extra seconds, staring at the dim ceiling of the observation chamber. Her mind was still spinning.

If there really was a way for her to get stronger without grinding herself into the ground through endless brutal training, of course she would take it.

The kiss had proven that much.

Four levels. A class mutation. A temporary but real expansion of her own core. No other support had ever given her that.

But Revien belonged to Jenna Everheart.

Which meant Gianna was also his partner.

Rei liked Gia.

She was one of the few cadets in the entire sector who could actually rival her in raw strength and stubbornness.

That was exactly what made the situation so irritating.

The idea of sharing a support this valuable with someone she respected and competed with sat wrong in her chest.

She finally sat up and pulled the helmet off. Her braid had come completely loose after putting off the helmet; dark hair fell around her shoulders in a messy cascade. She didn’t bother fixing it.

They walked together toward the main observation floor where Jenna was waiting.

Rei stayed beside Revien the entire way. Close enough that their shoulders almost brushed.

She could still feel the faint residual tether from the chain and the kiss, like a bruise under the skin of her thoughts.

"What’s your class?" she asked without looking at him.

"You don’t want to know."

That only made her more curious.

"I’m asking anyway."

He gave a short, humorless breath that might have been a laugh.

"Succubus."

The word landed exactly the way it had inside the simulation.

Rei filed it away without reacting on the surface.

Internally, the implications stacked quickly. Restricted. Dangerous. Usually locked down. And somehow this one was walking around free under Jenna’s sponsorship.

Either they were doing it under Empress orders, or Jenna was bold enough to keep him hidden from them.

They reached the lab.

A large holographic leaderboard dominated the far wall, already updating with the results of the five simultaneous first-timer simulations.

Jenna stood in front of it with Mira at her side, both of them studying the scrolling data. Gianna was nowhere in sight.

Rei’s eyes went straight to the rankings.

Team Four — Overmatch Provisional

Clear Time: 03:00:00

Monsters Eliminated: 47

Core Integrity: Stable

Notable Event: Vanguard Unit Rei - Class Mutation Detected (Blood-Forge)

They had taken second place.

The top team had finished three minutes faster, but their monster count was lower, and they had suffered two forced ejections.

Jenna turned as they approached. Her gaze swept over the group, lingered for a fraction of a second on Rei’s loosened hair and the faint residual flush still coloring her cheeks, then settled on Revien.

"Report," she said.

Ruby answered first, voice calm.

"Three Ironclad Stone Goliaths, multiple leech-type blood-seekers, and several smaller clusters. We cleared the primary basin and pushed deeper until the timer ended. No ejections."

Mira was already typing furiously on her tablet.

"The mutation flag is new. Rei, your core readings spiked hard at the twenty-two-minute mark and then stabilized at a higher baseline. Care to explain?"

Rei met the researcher’s eyes without flinching.

"He kissed me."

The silence that followed was brief but sharp.

Ruby made a small choking sound. Saber’s expression didn’t change, but her head tilted slightly.

Jenna’s face remained perfectly controlled, though something unreadable moved behind her eyes.

Revien didn’t look embarrassed.

He simply shrugged.

"She was at eighteen percent and about to get stomped. I used Vital Drain Kiss to force a recovery. It triggered something on her end."

Jenna’s voice was very quiet.

"And the mutation?"

"Blood-Forge Core Evolution," Mira supplied, still scrolling.

"Temporary at first glance, but the baseline potential shift looks permanent. That’s... not normal."

Rei flexed her fingers, feeling the last traces of the enhanced state fading.

"It felt different from every other support I’ve trained with," she said.

"Their mana is a loan. His expanded what was already there."

Jenna studied her for a long moment.

"You’re not scheduled for further simulations with this group."

"I want to be."

The words came out before Rei could stop them. She kept her face blank, but the demand sat in the air between them.

Jenna’s gaze flicked to Revien, then back to Rei.

"We’ll discuss it later. All of you, get checked by medical and log your personal reports. Mira will debrief the mutation data separately."

Ruby let out a long breath and started toward the medical wing.

"I’m going to sleep for a week after this."

Saber followed her without comment.

Rei remained where she was after Ruby and Saber left for medical.

Revien had already turned to follow Jenna toward the exit.

She called out before she could stop herself.

"A minute, please."

Jenna glanced back, took in the look on her face, and gave a single nod.

"Don’t be long."

She continued down the corridor without waiting.

Revien followed Rei instead.

She led him a short distance to the side room where Mira had run the sphere tests earlier.

The door slid shut behind them with a soft hiss. The space was small, dimly lit, and still carried the faint residual charge of mana from the previous session.

Rei didn’t speak.

She turned, closed the remaining distance in two steps, and shoved him back against the wall hard enough that his shoulders hit the reinforced panel.

Then she kissed him.

Revien’s eyes widened.

"Wha-?"

It was nothing like the controlled exchange from the cavern.

This one was pure hunger.

She needed to test it.

Whether it was a fluke

Or was he really worth fighting her family for?