Strongest Mage with the Lust system

Phew!

Max opened his eyes and let out a long breath. He had refined his 2500 mana points two times and reinforced his mana core. Now he can easily add more mana points.

Just like the heart and kidneys refines blood constantly in the human body to provide energy, mana also needs to be refined to improve its quality and affinity. That's why mages would meditate daily to refine their mana.

'I should add the rest of the LPs into my mana stats now.' Max thought and opened his status screen and started increasing his mana.

In a while, his mana once again increased by more than 1500 points.

[Mana: 4050]

'Finally I'm a middle stage two-star mage.' Be thought excited. 

Because to become a three star mage, one needed to have 10000 mana points, when some exceeds 2500 mana point threshold, they are considered middle stage, after exceeding 5000 MP threshold, they are considered high stage and after having more than 7500 MPs, they are called peak stage two-star mage.

Step! Step! Step!

While he was celebrating his advancement, he heard someone slowly walking out of the cave. He turned around and saw that it was Belén.

"Is my four-hour guarding shift over?" Max asked, a bit surprised. He thought that there was still some time left.

'Maybe I was too focused on cultivating that I didn't notice the passage of time.' He thought to himself.

"No, there's still some time left." Belén shook her head and continued, "I came out a bit early to tell you my decision."

"Oh? Okay. Tell me then." Max focused his attention on her. He was sure that she must have felt her power increase after cultivating just now.

*Inhale!*

Belén took a deep breath and solemnly declared "I swear by everything that is considered holy to be loyal to you and not betray your trust. If you keep your promise to let me have my own free will and never force me to do anything that I don't want to do, I'm willing to be your slave for ten years."

After saying this, she looked into his eyes, waiting for his response.

Max smiled and stood up. He walked up to her and said "I promise never to force you to do anything that you don't want."

Hearing this Belén smiled and nodded. She wasn't completely sure if this decision of hers would prove to be beneficial in the long run or not.

However, She knew that if she tried to cultivate by herself with the resources she will be able to get from the academy, she could only reach peak of three star or initial stage four-star mage realm.

Therefore, she had to try her luck. Even if she couldn't break past mortal boundary, at least she can become four star mage while enjoying the benefits to becoming his mistress/sex partner.

Max sat down in the chair and pulled her to sit in his lap. While caressing her back, he slowly said "I'm sure you must have already noticed that I've the ability to make those who I have sex with, stronger."

Belén nodded. Then he continued "So, whenever we have sex, you should always cultivate right after to gain maximum benefits." Belén nodded seriously.

Slap!

He slapped her ass making her flinch as she was still feeling sore in her lower body and said sternly "However, make sure to never mention this secret to anyone, or you'll regret that."

"Mhm! Don't worry I won't expose your secret." She nodded her head. She knew that if this secret of his were to be exposed, he would be in endless trouble.

"Good. So should we do it one more time now?" Max chuckled as he cupped her ass and gave it a tight squeeze.

"Ahn~" Belén moaned and hurriedly shook her head. "N-No, I can't do it now. I'm still feeling sore all over."

'Maybe I should hold back a little while having sex. They don't have enough stamina to do it more than a few times.' He thought, remembering the situation Leticia was in during the day.

"I was joking. However, can you guard the cave when you aren't in peak condition right now?" He asked.

"Yes." Belén nodded and chanted a spell. 

Rumble! Puff! Crunch!

Green vines started coming out of the ground and quickly spread in the two hundred meters around the cave.

While sitting in his lap, she looked into his mesmerising Sapphire eyes and smiled proudly "I can feel everything around these vines. If any beast comes into a 200-meter range from the cave, I'll be able to sense it."

"Such a convenient spell. However, can you sustain the mana consumption for four hours?" Max asked again.

"It'll not be a problem. This spell doesn't consume much mana. If these vines aren't destroyed, I only need to provide a little bit of mana." Belén explained with a smile.

"Okay then. You guard, I'll sleep for a while." He yawned and stood up while lifting her up and then put her down in the chair.

"Mm, have a good sleep." Wished Belén.

Max returned to the hall. Everyone was sleeping. He also laid down on the his bed and fell asleep.

...

When he woke up in the morning, Everyone was already up. Haory was making breakfast while Rima was helping her. Belén was resting and Leticia was outside, guarding the cave.

"Oh, you finally woke. You seemed have exerted yourself a lot to sleep this deeply." Rima's playful voice sounded in his ears.

Belén blushed at her words while sneaking a peek at him. Haory frowned before continuing doing what she was doing.

Max didn't react and only smiled at this. He went out of the cave to freshen up.

...

...After a week...

Sun was shining brightly in the sky, but because the mountain was covered in dense forest with tall tress, barely any sunlight was reaching the ground.

Haory was guarding the cave, sitting in the sand chair with a calm expression.

Max, Rima, Belén and Leticia were inside the cave, sitting on their flower bed in meditation.

In this week, everyone has improved quite a bit.

Haory's control over her new spell became more refined which deducted the casting time.

Others also improved their new spells and their mana also increased thanks to eating mana rich meat three times a day and rigorous cultivation.

However, apart from Max, it was Belén who improved more than anyone else. She had reached the middle stage of two-star realm with more than 2500 mana units in her mana core.

Everyone was shocked by her rapid improvements. When they came here, all of them had almost same amount of mana and were initial stage two-star mages.

This made Belén jubilant. She knew why she improved so much. It was because she would have sex with him at least one time daily and cultivate right after.

Max also collected another 20000 mana points. This number would have been even greater if he had sex with Leticia too. However, she didn't approach him again for some reason and Rima also didn't take initiative.

...Meanwhile, outside the cave...

Thud! Thud! Thud!

"Mm?" Haory became alert after hearing heavy footsteps coming toward the cave from the forest.