From the fight earlier, I was able to know 3 things. First, the humans in Greis are weak when it comes to pure physical capabilities, Second, they are too reliant on this thing called Body enhancement that they forgot to improve their natural physical body, Third, the entire immortal blades, who is also known to be the third strongest force in the entire continent of Rumie, is just on the level of a captain of yggdrasil.

"The dinner tonight is delicious, Selly." said Sigfried.

The headmaid who was complimented bowed her head and replied.

"I'm honored to receive your praise, your majesty."

"So? How did your little walk go?"

"It was splendid, the environment here is beautiful and peaceful." I said in reply to the queen's question.

"Good to hear that, if you need anything, feel free to ask us, we'll do our best to meet your demands."

"thank you."

Airi, who was silent until now suddenly spoke.

"Father? we just saw some slave traders earlier, you really should tighten our security, haven't you heard the news? it appears that someone knocked out the guards of Hillian kingdom and infiltrated it. Right now, they're mobilizing their forces in order to protect the nobility there."

"bfoo!*"

After hearing Airi's words, I almost choked on the food I was eating.

"hmm? Lucas, are you alright?" asked Lily.

"yes, don't worry about me."

"Slave traders? we're at war right now, so we're facing shortage of knights, I guess that's the reason why these illegal people managed to sneak in successfully, sigh* if only we have more people..." replied the king in exasperation.

Eh? Hillian kingdom? knocked out guards? Infiltration? are they talking about....me? oooppss?

"So? did you report them?" asked Vin.

"We reported them but... the slave traders disappeared, we managed to rescue all the abducted people. After we reported it, we just heard of the news that they were found dead inside the warehouse. By the way, Nii-sama, when you rescued the children inside, didn't you see them?"

"I didn't notice anyone inside, that's why I was able to get them out easily..." I replied. Of course that was a lie, after all, I was the one who killed them, and I volunteered to rescue the children inside to prevent Airi from seeing a disturbing sight.

"Is that so? then whoever killed those slave traders are considered dangerous, we must tighten the security." said the king.

"Anyway, let's put aside this topic of slavery and killings. Lu-chan, where did you get your clothes, they look pretty but strange." Asked the queen.

"Lu-chan?" I was surprised at the sudden change of name.

"Do you like it? I shortened your name so that it'll be easier to pronounce, and it also sounds cute, don't you think so?"

"Y-Yes, p-please feel free to call me any way you like" I replied, it looked like something bad will happen if I disagreed, so I just followed along the lines.

"Anyways, back to the topic, where did you get those?"

"Oh, I got these from a traveling merchant, I think he said something about these coming from an otherworlder."

"From an otherworlder!? now that I look at it properly, although it looks of a higher quality, it's similar to the clothes that the 140th otherworlder wore when he was summoned here." said the king as he inspected my clothes.

"But still, to be able to get something like that..."

"Anyways, you should all sleep early, tomorrow, we will officially reinstate Lu-chan as the 2nd prince. Since this is an important and memorable moment, all of us should be in top condition." said the queen as she slowly stood up.

"""Understood""" all of us replied in unison.

"Lucas-sama, please follow me, I will lead you to your room." said the headmaid, Selly, as she gestured me to follow her.

After tidying myself, the six of us stood up, each of us going to our own respective rooms.

"Selly was it? is there a library of some sort of study room inside this place?" I asked the maid who is in front of me.

"A library? there is, your highness, do you want to get some books to read?"

"Yeah, if it's possible."

"Then please follow me, the royal library is a little far from your room."

"Thanks, and I'm sorry for taking up your time."

"Please don't be, it is my duty to serve you."

After walking for a while, we finally stopped in front of a door.

"Inside here is the royal library, would you like to go alone inside?"

"Yes, please wait here for me, it won't take long."

"Understood."

I went inside and immediately started searching for books that contains information about this world. Whether it be races, magic, countries, and everything else. Since I can move at high speeds, I was able to search for everything I needed easily, there is a total of 46 books that piqued my interest, so I stacked up all of them and went out of the room holding them using my left hand. An important part of my training in martial arts is balancing, so even if I stacked up thousands of books and placed it above my head, it won't even sway, even if I run, that's why this is an easy feat for me. The entire process took only about 13 seconds.

When Selly saw me get out quickly while carrying the tall stack of books without it swaying, a look of shock appeared on her face.

"H-H-How is this.."

"Oh, I saw this stack lying around in a corner, it piqued my interest so I just picked it up."

"I-Is that so? p-please let me carry those."

"No need for that, I can handle it just fine"

"No, please let me do it, I can't have you carrying such a huge stack of books, this is my duty as a maid."

It looked like it's impossible to convince her. In the end, I conceded and handed them over to her.

"Thank you." Selly said to me.

"I should be the one thanking you for your help."

"No, this is my duty, so don't worry about it, your highness."

After that, we went back and I entered my room. The interior looked beautiful and simple with everything one could need and want. The red colored bed, the golden chandelier, and the large window, everything looked elegant.

"Thank you for carrying those for me."

"Yes, I would now take my leave."

After she left, I immediately closed the door, grabbed a book, sat down and started reading on the desk. Because of Gabriel's help, I was able to read this world's language easily.

.....

After 3 hours of reading, I managed to finish half of the 46 books. Because of my special eyes and high performing intelligence, I was able to read an entire book in 7-8 minutes, and all the things that I recognize as important contents will be easily memorized.

After reading them, I was able to acquire a vast array of knowledge. For example, the continent where the country of Elune is located is called Rumie, and within it there are 11 other countries.

As for the magic, there are 3 types and 8 elements. The elements are Fire, Water, Wind, Ground, Ice, Lightning, Dark, and Light. While the 3 types are called, Attack type, Defense type, Support type.

In order for a human to be able to use magic, their mana needs to be activated by the sage king, also known as the God of magic, one of the 13 supreme gods.

Greis was said to be created billions of years ago, by the God of creation who is called by the Gods as 'God Celestia'.

There are many more knowledge that I have acquired from reading these books. Those that will help me in the future. But before these things, it looks like I will have to eliminate the current problem first.

"Jahal kingdom. I'm sorry but, you will have to disappear."