Strongest Mage with the Lust system

Maria blushed red and buried her face in his shoulder before muttering in a mosquito-like voice, "I want lord h-husband to do what you did with big sis Rima when I came into the room last night."

"Hm? You want to do that? Are you sure?" 

Max asked in surprise when he understood she wanted to have anal sex. Despite going at it like rabbits, Max didn't do it with her back hole last night because he was worried that she might not be able to take it.

"Hehe, you don't know this since you haven't spent much time with her, but our sweet Maria is a very competitive girl. Since she had seen you enjoy mine, she wants you to enjoy hers, too." 

Rima giggled, and this made Maria so embarrassed that she wanted nothing more than to find a hole to bury herself in.

Max chuckled at her and cupped Maria's face in his hands and made her look at him before saying, "Are you sure you want this? It could be very painful for you." Given how she had bled when he took her virginity, Max really didn't want to take the risk, at least not yet.

Hearing this, a look of uncertainty and fear flashed past her eyes. She also remembered that day. However, recalling how heavenly he made her feel afterwards, and how Rima was moaning in pleasure as he took her from behind last night, her gaze became determined.

She took a deep breath, looked into his eyes and nodded, "Yes, Lord husband. I want to do it regardless of pain."

"Very well." Max nodded and then said, "I'll fulfill your wish the next time. Right now, we need to get out of here and have some food."

"O-okay." Maria nodded, a little disappointed but happy that he agreed.

When Rima heard this, her eyes widened before she sprang up from the bed in a hurry.

"What happened?" Max asked, puzzled by the sudden change in her behavior.

"I was supposed to meet my master for training in the morning and its already afternoon. She will scold me." Rima said in panic before rushing to the bathroom. Within a few minutes, she rushed back out, dressed in a slightly loose clothing, fitting for training purposes.

Whoosh!

She came over to Max, gave him a peck on the lips, "I'm going, bye." She then rushed out of the room.

Max and Maria looked at each other and smiled. Then they also freshened up and walked out of the room.

Swoosh!

As soon as they stepped out of the room, the door of the room next to his opened and Amara walked out. She glanced at Max playfully, confusing him.

Before he could ask anything, however, another figure walked out of the room. It was his beautiful half-sister, Anna, and right now, she was glaring at him angrily.

Gulp!

Max gulped nervously and asked, "What's wrong, Anna?"

Anna walked over to him with slow steps, not breaking the eye contact. She then glanced at Maria before looking back at him and asked, "Did you have fun last night?"

"Uh, I… did. Yes. But why do you seem… angry?" He asked, feeling slightly nervous.

"Shouldn't I be?" Anna tilted her head to the side, looking confused. Max, however, could tell she was acting and if he said something wrong, it would upset her greatly.

He thought about what could he have done, which made her angry and quickly got his answer. 

Before he could say anything, however, Anna put her arms around his head and pulled his face down toward him before placing her lips on his.

This surprised Max because he knew she wasn't ready to expose their relationship yet, but now, she was kissing him in front of Amara and Maria. 

But no matter the reason, he was happy about this development and responded to her kiss by cupping her face. However, just as he was about to use his tongue, she broke the kiss, leaving him dissatisfied.

She then glared at him with a blushing face and said, "Everyone was waiting for you at the dining table in the morning while you were sleeping with them in your arms. And now you wake up? You also must have forgotten that you promised to train with me today, haven't you?"

'Sure enough. That's why is angry.' Max thought, smiling wryly. However, he was relieved that she wasn't feeling jealous of Maria.

"Sorry about that. We… slept late last night. I was helping them raise their cultivation." He said with a straight face before adding, "And I didn't forget about our training. I was going to find you if you didn't meet me here."

"Hmph! Who knows if you aren't lying right now?" Anna snorted, looking away.

"Let me prove you. Look at me." Max said,

"Heh, how are you going to—" Before she could finish her sentence, Max had captured her lips in his for a deep and passionate kiss.

Anna hadn't expected this and tried to pull away, but Max held her in place with one of his hands holding her slim waist and another behind her head.

Amara wasn't at all surprised by this because, the day she met Anna for the first time, she had noticed Max was more than just a sibling to her and because incest was ordinary among demons; she didn't find it weird.

The things were completely different for Maria, however. Her mouth was hung open and an expression of utter incomprehension was on her face. For Elves, just like most of the humans, incest was taboo and frowned upon. That's why Maria found this situation too hard to digest.

She also became worried because if her parents found out that the man she was in love with was romantically involved with his half-sister, they might not allow her to be with him any longer.

After a few seconds, Anna stopped trying to pull back and started responding to the kiss. When she felt his tongue lapping at her lips, she slowly opened her mouth and allowed him entry. 

Max was more than happy by this and his tongue slithered inside her oral cavity immediately and found her juicy tongue, which was trying to stay away from it as though it had encountered a predator.

Noticing this, Max knew she was still not fully ready, but he didn't break the kiss and felt an overwhelming sense of excitement. He wanted to… dominate her. 

Thus, he started kissing her even more fiercely, pulling her face into his even more and sucking on her sweet, flower petal-like lips. Also, he continued trying to get her tongue involved and he could feel her inhibitions slowly falling apart, which excited him even more.

However, 

Whoosh!

Just as he was about to succeed and 'devour' her tongue, she used all her strength and pulled back.

Ha! Huff! Huff!

Panting and blushing, she said, teary-eyed, "I-I'm sorry, little Max. I don't think I'm ready yet."

When he saw her guilty expression, Max, although dissatisfied, quickly suppressed his surging excitement and put his finger on her lips, "Shhh! Don't apologize." 

He said, gently smiling, "You can tell me whenever you are ready, alright? There is no need to push yourself if you are not ready."

"Mm." Anna forced a smile. She was afraid her continuous indecision would annoy Max, but thankfully, it didn't which made her sigh in relief.

She hugged him, burying her face in his chest and said, "Thank you."

Max gently caressed her back, reassuring her.

After a while, Max and Maria had their meal, satiating their hunger and the group of four arrived at one of the training rooms in the mansion.

"Let's spar first. I can learn a lot by fighting you." Anna said, pulling him toward the middle of the room.

"Alright." Max nodded.

...

Initially, he held back quite a lot, afraid that he would accidently injure Anna.

But very quickly, he realized, if he didn't get slightly serious, he would be the one getting injured because Anna was just too good at the hand to hand combat.

If it wasn't for his strong physique, then in the case where he didn't use any Mana, Anna would've utterly dominated him despite her being just a mid-stage two-star mage.

---

While they were sparring, an imposing group of fifty demons had arrived before the Ninam city gates.