[You tried to use your air manipulation superpower to lift yourself in the air to perform flight. Unfortunately, you realized that the energy contained within the zombie viruses in your body was insufficient to perform such energy-consuming moves.]
[You discovered that you have to cultivate the zombie virus in your body to not only make your air manipulation superpower stronger but also to have more energy to use your superpower.]
[For now, you know that the only method to cultivate the zombie virus in your body was to increase the number of zombie viruses in your body. But the zombies wouldn't take the initiative to bite you so you couldn't obtain more zombie virus using that method.]
[You aren't a virologist nor a scientific researcher but from your hypothesis, the more zombie virus your body possessed, the stronger your superpower would be and the more energy you would have so that you can use your superpower more frequently and with longer duration.]
["There is also the possibility that there is a limit to the number of zombie viruses that a human body can possess and cultivate. So the excess zombie viruses that were injected into the human body will likely be used to cultivate the existing zombie viruses, making those zombie viruses evolve and become stronger."]
[You didn't know if your hypothesis was correct or not. But to prove that it was, you decided to take the risk. Since your body was as strong as the average zombie, you decided to drink zombie blood which contained a high concentration of zombie viruses.]
[You could also drink the tap water which was infected with zombie viruses, but you know that the tap water has a low concentration of zombie viruses compared to zombie blood so you didn't do that.]
[After finding a zombie that you could use as your blood bag, you used your air superpower to lock that zombie in place by trapping it in solidified air. It was like a figurine confined inside a tight plastic wrapper.]
[Since zombies didn't have any intelligence and solely relied on instinct to hunt for human prey, the zombie that you have captured didn't resist and dumbly stood in place.]
[You didn't want your steel sword to get dirty and rust later on so you created a makeshift air knife and slashed it towards the wrist of the zombie. Blood spurted out from its open wound but before the blood could stain the ground, you used your air superpower to levitate it in the air.]
[You didn't know the taste of zombie blood but when you opened your mouth reluctantly and drank the zombie blood, now you know. It tasted like acidic water with a hint of rusted iron and lemon pulp.]
[The zombie blood didn't taste very well but in order to become stronger, such sacrifice was nothing but an easy price to pay.]
[After drinking zombie blood, you sat on the ground and meditated so that you could further notice the changes in your body. With full concentration on observing the changes in your body, you noticed something peculiar.]
[There seemed to be a fixed number of zombie viruses in your body, at least from your estimation. You didn't have a microscopic point of view of your internal body so you didn't know if there was any difference between the zombie virus in your body compared to the zombie virus of the zombies.]
[But from your educated guess, it was likely that the zombie virus of a superhuman such as yourself would vary depending on the awakened superpower. The zombie virus contained within a zombie also varied depending if the zombie had evolved or not.]
["Since humans can evolve, that can also mean that zombies can evolve as well. So the longer the time passed since the apocalypse started, the more powerful the zombies will become due to evolution." You speculated as you noticed the changes in your body.]
[The zombie viruses in your body seemed to absorb the zombie viruses of the zombie blood that you had drank before. They used the foreign zombie virus to evolve themselves and although there weren't any major evolutions, you did notice that your air superpower had become stronger and you could now use it a lot longer.]
[From your estimation, you are currently an E-rank awakener. Before, you were only at F-rank but now, you have stepped into the realms of E-rank. There weren't any feelings of major evolution since the gap between F-rank and E-rank wasn't as high as you expected it to be.]
[And you have estimated that the lightning awakener in dormitory 172 must be at the peak of F-rank. Nevertheless, you became more confident in your power as from your estimation, you are at the F-rank Initial Stage.]
[You didn't know if the method of evolution of other human awakeners revolved around drinking the blood or eating the flesh of zombies. It might also be the method that was unique to you since you possessed the Zombie Virus Immunity (Purple) talent.]
[From your discovery, the method of acquiring zombie virus didn't matter much as long as zombie viruses were used as a catalyst to perform evolution. In other words, whether it was drinking contaminated tap water or zombie blood, both were the correct methods as long as the zombie virus was ingested into the human body and was fed to the zombie viruses within the human body.]
"As expected of myself! Even without an intelligence simulation talent, I can still find the method of evolution!"
Alister was very satisfied with the progress of the self in the simulation. After all, the stronger his simulation self became, the higher the quality of his reward would be as well as the higher the simulation score would become.
[After discovering the method of evolution, you were no longer reluctant to drink zombie blood.]
[Instead of fetching a zombie girl in the girl's dormitory, you decided to become stronger first so that you can easily subdue the zombie girl that you planned to cultivate.]
[With that in mind, you started a spree of drawing blood from the zombies around you as they became your walking zombie blood bag!]