Travel to Another World because ROB asked me.

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{POV: MC}

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What?

You actually have another function, system?

["Yes. This function only unlocked when I judge you are at least have a minimum requirement to be mentally ready for world travel though."]

I see.. It's because I realize I was stupid huh?

["Bravo user."] The system answer.

But why you never told me?

["It's forbidden for me to do so, as ROB-sama set me like that. You need to realize it yourself. Your mission is extremely dangerous, and with your old behavior, you won't last in this world, forget about a more dangerous world. "] The system replied.

Uhh.. I can't retort you because that was true. I would be forced to use Encounter to win the fight against Riser.

And thinking about the side effect himself make me afraid to lose my own identity.

I was really stupid, I never plan on fighting him and I just think.. Everything should be turned fine with my cheat! something like that.

When I think about it, I realize how stupid I was.

["Yes you are user."] The system said in a flat tone.

What happens if I keep being like that until 18 years old?

["You are still allowed to world travel without unlocking any function, but user probably just dies somewhere with your naive and reckless attitude. BEWARE user, even if your cheat makes you invincible, you certainly will be not yourself anymore after being forced to use Encounter for a long time. You might as well decide to kill yourself before that time happen."] The system explains.

Uh.. That's so true so bad that it actually felt hurts.

Then what happens if I decide to back being naive after you told me this?

["User will lose the memory of this conversation until user meet the requirement again."]  The system replied to me.

Ouch. That is surprisingly harsh.

Anyway, what is your new function again?

["Energy conversion."] The system answers my question.

Uh, what?

["Every other world has a different settings on their own, user. You should know this better. For example, Naruto world using chakra, so you can't use magic on that Naruto world because it is mana based, and there's no mana on there. Another example is Bleach who uses soul power and a lot of cultivation world that is based on qi. With this function, It's possible for you to learn other energy skill set as I'm able to convert your energy into any customed energy."] The system explained to me.

That's surprisingly helpful. Does that mean I can learn the skill from the other worlds and use it in the different world too?

["Yes. For example, If you somehow learn soul power skills from Bleach. With new functions, It's possible to me to execute the skill in this world. You might only have chakra and mana, but I can convert them to soul power with this function.] The system continues his explanation to me.

Ok, I decide that you are not so useless anymore system.

["You are the one who told deemed me useless, I never admit that I was useless myself. I'm a world travel system after all. Obviously, I support my user with all thing regarding world travel system."] System comment on my opinion.

So, is there another function I can unlock from you? And the requirement?

["Yes. But the requirement will need to be realized on your own, user."] The system said to me.

Tch. Usele-. Ok, you are not useless anymore.

["I hear that user. Seems even after realizing your own naivety, you still being yourself."] The system retorts me.

Thank you. But I will seriously change from now on.

I won't believe all my knowledge anymore about this world until I have confirmed its same as their stories counterpart.

I don't want to make my sister in a dangerous situation because I just being stupid anymore.

["Uhh siscon."]  The system comment on me.

Well, I am indeed siscon.

Now, I need to plan how to change myself.

Probably start from training my abilities? Learning magic? Read a lot of books? Perhaps playing chess? I hear it makes me smarter after all.

["..."]

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 

{POV: Matsuzaka Satou}

Location : Phenex Mansion, Underworld.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 

Thinking about what I did again to Onii-chan somehow makes me feel really bad.

I have to lie to him so many times, and now I'm beginning to start to manipulate him too.

But it's for his own sake.

Both of me and Azazel actually were able to stop the battle even before Onii-chan decides to use his EMS power, but Azazel said Onii-chan need to learn about reality.

The current Onii-chan is too stupid and will put him in a lot of dangerous situations if Onii-chan is still being stupid Onii-chan.

Thus I watch Onii-chan being beaten by that chicken guy as Azazel plans to teach Onii-chan he needs to stop being stupid.

He was beaten so badly that even Onii-chan would use Encounter if not because I decide to intervene.

I really want to stab that chicken but I'm also feeling thankful to him for what he does to Onii-chan.

Azazel said that his plan works and he said Onii-chan realize how stupid and naive he was, and he also asks Azazel for guidance.

That's actually great news and bad news to me.

If Onii-chan was smart enough, he would be able to see my real self after all.

>>>>>

Currently, I'm with Azazel-san in the underworld at the Phenex mansion.

This place is so huge, and I can see their family is really rich.

I look at the chicken man who hurt my Onii-chan sitting on another side with his family.

No doubt this chicken guy really could give that crazy woman a building or two because of how rich their family is.

I want to stab him, but I know it's probably not possible after this proposal is accepted.

Well.. the proposal helps both parties and helps me with my own plan about Ravel so It's a really important deal.

If this deal is failed, my other choice probably only kills the whole Phenex family then only let Ravel alive after that.

That's the only other way.

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{3rd POV}

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"Unn.. let's just start this meeting to solve the problem between us" Azazel said.

"Okay, Azazel, the governor of the fallen angel. Let us hear what is your proposal." Lord Phenex replied.

"I knew you phenex want to the wielder of black fire." Azazel stated.

"Yes." Lord Phenex answer.

"May I know the reason?" Azazel said as he questioning Lord Phenex.

"It's because the black fire is dangerous. From what my son said, he needs to use the full power of his hellfire to even be able to confront that black flame. Its power is also overwhelmingly high for a flame, and from my assumption, its potential is comparable to the power of destruction that Bael has. It might be a chance for our family to actually rise in power, surpassing that Bael family." Lord Phenex explains.

Hear the reason from Lord Phenex, Azazel now gets their intention. Now he needs to correct their assumption and make them agree with his proposal.

"You are actually not wrong. From the brat itself said, its called Amaterasu fire, its a fire that is able to burn anything include the fire itself and it won't be gone until it sealed or the user itself run out of energy." Azazel said with a serious tone.

Riser who sit beside his father snorted to hear Azazel's words.

"Hmmmph. But I'm easily able to confront that fire with hellfire, though hellfire is indeed my highest fire ability. If what you said is right, then that Amaterasu fire should easily burn through my own hellfire then?" Riser said with a disdain tone.

Azazel shakes his head as he thinks the Phenex brat might be not smart as he thought.

"The thing is, the brat itself is still too young that even shoot one measly small Amaterasu fire already cost him a lot. Thus he would never be able to use it to its full potential, at least with his current body. Remember that brat is ducking 6 years old, Phenex brats." Azazel said with an amused tone.

Riser fell silent after hearing what Azazel said.

.....

"I see. Then its power also depends on the user. Could the power also be used by us?" Lord Phenex asked Azazel.

"No. From my own research and the brat explanation, the eyes using chakra and his special bloodline to use it properly, and you guys Phenex being devil doesn't have chakra neither the brat bloodline." Azazel explains to Lord Phenex.

"...I see. Then this is useless from start, huh." Lord Phenex muttered after hearing what Azazel said.

Look at Lord Phenex, Azazel begins to talk as he thinks it's the perfect time to put his proposal.

"Nah Nah, let me tell you my proposal now. Your family wants to have that black fire integrated into your family right? How about engaged Ravel with that brat?" Azazel said with a serious tone.

Everyone except Satou and Azazel was shocked to hear Azazel's proposal.

"What?! Why I should engage my daughter with that boy?!" Lord Phenex stand up as he was shocked after hearing Azazel's proposal.

"Nah.. Calm down. I propose this because only in that way, you can only have Phenex who might possibly be able to wield that fire. The offspring between those two should have a chance to inherit both Phenex and the bloodline of that brat. I also will tell you that the eyes from that brat also 100% appeared on his offspring if you are not convinced enough. I will guarantee that for you." Azazel explaining to Lord Phenex.

.....

Lord Phenex fell silent as he thinking about what Azazel just said.

*BAMM*

"I won't accept it! Otou-sama, that brat is human!" Riser said after he hit the table hard to show his rejection against Azazel's proposal.

"So what if that brat human, you have the chance to have the wielder of black fire in your family." Azazel said to Riser.

"Then turn that brat into reincarnated devil at least!" Riser said loudly to Azazel as he didn't convince at all.

"Not possible. Are you forgetting his magic arm, and don't forget about his encounter mode what I said.. That was real you know, I'm not bluffing." Azazel answers Riser with an amused tone.

....

"I accept your proposal." Lord Phenex said.

Azazel and Satou smiling after hears Lord Phenex answer.

"Otou-sama!!" Riser yells at his father.

"This is also Ravel's punishment for her attempt to betray her family. Besides, I know she certainly has a good impression of that Satoru brat from all stories I've heard from herself, then why we don't engage her to him then." Lord Phenex said to Riser.

"But!! Ravel is--" Riser back yells at his father.

"Son, You are aware the breeding practice isn't exactly uncommon in our society. Your engagement with Rias Gremory also because we want to have the possibility of getting offspring between PoD and Phenex fire and regeneration. It's also the same with the Ravel case." Lord Phenex said to Riser.

Riser fell silent for a while after listening to his father's explanation.

..... 

"But Otou-sama!" Riser begins to talk again.

*BAMM*

"Silent! This decision is final. She might as well come live with her fiancee from now on. Also, I expect this should be the start of cooperation between the fallen angel's faction and our family right?" Lord Phenex said to Azazel.

Azazel smile after hears that.

"Sure thing. We can talk about that more at a later date. For now, Happy Cooperation." Azazel said.

"Happy Cooperation." 

Azazel and Lord Phenex handshake together after that.

The deal between them isn't so bad in the end.