a few days have passed since Levi was taken to the white tower. because growing out his fingernail broke the restriction inscription for some reason, and also stabbed his hand, old gray told him not to try doing it again. over the past few days, although he still didn't know what was happening with his body, he had calmed down quite a bit. since he couldn't figure out why his core was restricting his body, he could only lose himself in thought. he thought back to how he fought, letting people stab through him, because he knew that he would be able to heal just by absorbing some blood. but now, for some reason, he could no longer heal. specifically, he couldn't regrow a limb, or the hole in his side. this was made clear by the fact that only skin grew back.
so he made up in his mind that if he were able to cultivate again, regardless of whether or not his ability to heal returned, he would have to change the way he fought. instead of letting people hurt him, he would have to learn some kind of agility technique to dodge, and also block.
he also continued to review the information about inscriptions, the seed of knowledge pulsating every time he understood something. while reviewing, he found a part talking about using materials for inscriptions. the kind of material depended on the inscription. it explained that one would have to be strong enough to break down the material with qi, without destroying it. you would then construct the patterns with the qi that contained the material, then implant the patterns in a suitable vessel, sword, sabre, what ever the inscription master preferred. but what ever they chose, it would have to be of a high enough quality to be able to withstand the inscription being implanted and staying there indefinitely, or both the inscription and the vessel would collapse or break. although all of this was not yet possible for Levi, he continued to muse over it for a few minutes.
there was also a part in the same set of information, about using living things to create inscriptions. but although old gray made him read the book from cover to cover in those few days, he could not remember everything, this was a perfect example, as the information was fuzzy. "...y....oy...boy." an aged voice brought levi back from his thoughts. "...old...gray.." Levi opened his eyes, to see old gray with a plate of food in hand. he struggled to sit up, which was only possible because of the restriction on his body, although it also made it hard for him to move. " do you have any idea why your body is like this?" old gray asked. " ...no..i..keep thinking....about..it..but i...can't...think of...anything...." levi replied slowly. "hmmm." old gray responded. "...is it...normal...for me...to still....have..my...seed of...knowledge?" levi suddenly asked.
"what?! you still have it?!" old gray was greatly surprised. " since the seed of knowledge is directly connected to qi cultivation, it should have been destroyed when your dantian was broken....but still, even with the seed of knowladge...sigh..." old gray could only sigh. after a few more minutes, old gray left. Levi closed his eyes again, and lost himself in thought. he then remembered a day when he was at the demonic god sect, where a loud voice, which he later found out was avesta, shouted something in his head about a blood flame. he had never found out how exactly how to use it.
"....!..blood!...blood...lines!" something came back to him. he remembered when Avesta first appeared, she said something about the core storing his bloodlines. but why would they need to be stored? because if they were all in his body at the same time, all of them would try to destroy each other! his core was restraining his body, yes, but only the bloodlines in it! he also suspected that the core regulated the bloodlines, so that when he used them, they would be easy to control. his fingernails for example, he tried to grow out his fingernail, but instead of growing straight out like normal, it bulged and curved at different parts, even stabbing his own hand. Avest also said that the core held records of the different bloodlines, which could have contributed to his ability to control them so well. the core could have also been restraining how much of the bloodline he could use, ensuring that he could use a bloodline that would change the shape of his body in whatever way, but always be able to retain or return to his human appearance.
'but i still don't know what that has to do with me not being able to rebuild my arm or my side. unless....' he had a thought. at one point, Avesta also told him that as long as the core was still intact, even if his body was destroyed, he could either take another person's body or rebuild his own over time. which would mean that his core also recorded everything about his body, and since it was damaged, those records were most likely destroyed, making him unable to heal or regrow complex body parts like an arm, or muscles. in simple terms, since the core recorded details about his body, he had no need to do so, making him able to regenerate as long as the core was still functioning. but since the part of the core holding those records was damaged, he wasn't able to regrow his arm or side because he didn't know their structure, since he never needed to know.
"..." although Levi figured things out up to this point, there was still the issue of how he would go about fixing these problems. he had asked Avesta if he could fix his core, but she said that he didn't have the strength or materials to do so. he also remembered that old gray said he didn't understand his core, which meant that even he didn't know how it was made, or how to fix it. ' is it even possible for me to restrain the different bloodlines in my body with willpower alone?...." he thought about this for a while.