Li Ke's current mental state can be described as brimming with fighting spirit and boundless energy.
Because after completing his training, he realized something.
That is, he won't be able to be so carefree in other worlds anymore!
His physical strength is only average, and his medicine will become like a rootless duckweed after leaving the Seven Days to Kill world; it will eventually run out.
In other words, he can no longer casually ejaculate all day long like he does now; he has to be like everyone else.
While this isn't necessarily a bad thing, his ambition is to build a harem!
How can someone who wants to build a harem be incapable in this area?! Wouldn't that just be like befriending The Yellow Hair?!
Therefore, he must possess immense strength! Or rather, a powerful physique, and unfortunately, the Blood Mystique Secret Technique is precisely a technique for cultivating one's own blood and qi.
As long as one doesn't refine their blood energy into something like lava, or even more terrifying than lava, like a berserker, then the efficiency of blood energy techniques is quite high if it's just for physical training.
Li Ke's approach to cultivating blood energy techniques naturally focuses on strengthening his blood energy, which then nourishes his physical body. Aside from the somewhat absurd introductory methods and the inherent dangers, it's actually a legitimate way to train one's body.
But berserkers…
They're special; they turn themselves into a powder keg. They don't even care about their physical bodies anymore; as long as their blood energy exists, their bodies exist.
It sounds incredibly powerful.
But one wrong move and they'll explode. Even if they reach the state of returning to the source, it won't be of much use.
Furthermore, Li Ke really dislikes having his own blood energy contaminated by others'. After all, if your body is filled with other people's blood energy, are you still yourself?
After all, blood energy isn't just blood; it also encompasses a person's spirit and will. This is why a berserker's blood energy is so violent—the combined blood energy of so many powerful individuals wouldn't it be like a powder keg?
The blood energy secret technique Li Ke currently possesses only explains how to use blood energy to strengthen his body, how to squeeze his own blood energy to a higher intensity, and how to absorb and discard the blood energy of others.
As for how to survive…
It's not written.
It only states, 'Only by constantly suppressing blood energy can one survive, but if one cannot suppress it, one dies on the spot. This is the fate of us berserkers.'
Therefore, Li Ke only plans to practice the former; he won't touch the latter.
However…
"With this training method, an ordinary person would have died at least three hundred times over… and the room is filled with the smell of blood now. Are you sure you want to continue?"
Rias looked at Li Ke, whose body was suddenly spurting blood, and couldn't help but cover her face. Li Ke was constantly testing his body against various mistakes and potential failures. Should she say he was fearless because of that miraculous drug? Or should she say he was truly stubborn?
Such a difficult training method was truly incomprehensible. Was the person who created this method mentally ill?
Although it was clear that the power of this training method after successful mastery would be extraordinary, could anyone actually succeed in mastering it?
"It's alright… at least it wasn't a waste, and I did manage to learn something. Besides, with your magic array, my pain is only one-tenth, it's nothing."
Li Ke coughed, spitting out a fragment of internal organs, his face numb.
The reason he said it wasn't a waste was also simple.
Beneath him was a magic circle. The blood he vomited and spat out floated into a bucket along with the magic circle. Fragments of his lungs, accidentally shattered while refining his blood energy, were also dragged into the bucket by an invisible force.
Meanwhile, Rin Tohsaka, speechless, placed the fragments of internal organs and blood that Li Ke had vomited onto some equipment. Then, magical light flashed, and shimmering patterns appeared on the equipment, making it noticeably stronger.
"Although you don't mind, I still have to say, a magician could curse you to death with your blood and internal organs. And while using a magician's blood and internal organs to make Mystic Codes is a normal thing... you really trust me."
Rin Tohsaka couldn't help but mutter. After practicing that strange spell, Li Ke was vomiting blood everywhere, occasionally with fragments of internal organs. She had only casually mentioned that she had turned her extra, consciousnessless, soulless brain into Mystic Codes, and Li Ke had made a request.
That meant using his blood to strengthen his equipment and create some consumables for attack.
Rin Tohsaka felt it was unnecessary. Initially, she wondered how much blood Li Ke could bleed, but she did it at his request. Now, however, she realized that Li Ke was truly…
truly strange in some ways!
"The way you put it, I regret casting the pain-reducing spell on you."
Rias shook her head speechlessly. Although she constantly overdrawn her magic power to rapidly increase her total magic power and regeneration, she still felt somewhat averse to Li Ke's self-harming training.
Too bloody.
"But it definitely works."
Li Ke raised his arm, blood energy swirling around it. The next moment, he slammed his fist into a steel plate beside him, leaving a clear fist mark on the ten-centimeter-thick plate.
This damage was caused by unleashing one-tenth of his current power—that is, all the blood energy from his other world. In other words, in just one night, he successfully made his punch almost as powerful as a cannonball, but the exact era of the cannonball it was comparable to was unknown and required proper measurement.
Moreover, outside, after such a full-force attack, without taking a blood-activating potion, he would collapse and be even more miserable than his enemy.
But compared to his former self, who was only slightly stronger than an ordinary person, it was a world of difference.
After all, this was only the beginning of his training.
"Then you'd better take care of yourself."
Rias shook her head speechlessly, then sat by the window, staring blankly at the zombies wandering the wilderness in the distance.
She was actually doing the same thing as Li Ke. Li Ke wanted to use the situation here to go through all the mistakes, to understand why things didn't work, and what the results and effects would be.
While she was exploiting a bug to train her magic power.
The feeling of exhaustion was unpleasant. Her body, due to the constant 'squandering' of magic, was on the verge of death.
It was a feeling of utter weakness, a draining of spirit and soul, accompanied by extreme restlessness.
Even—
The urge to mate.
Any creature thinks of mating before its demise, especially in times of danger. This is why rescuing a damsel in distress is truly effective.
And the devils of her world were no exception.
Whether it was begging for mercy with their bodies after defeat or rapidly procreating after a thrilling battle, they possessed this instinct, ensuring their devil population remained intact.
Even so, generations of battles had nearly wiped them all out. Originally, the Gremory family could resolve their marriage problems through intermarriage, but later it evolved into marriage alliances between pure-blooded nobles.
And now, anyone willing to reincarnate as a devil can marry a devil noble.
This was also the source of her strange abilities.
Now, she felt a sense of unfulfilled desire due to her training, but the only man here…
Rias looked at Li Ke, who was focused on his training, and couldn't help but sigh.
"If only he were willing to become my peerage."
She was quite helpless.
If Li Ke were willing to become her familiar, she could even help him start his own family and establish his own clan name. As for the control over the Evil Pieces at that time…
The control over Evil Pieces is inherently very low; otherwise, there wouldn't be so many stray devils. After all, you're recruiting people, not taking them as slaves; usually, other contracts and rules bind them.
But some devils don't think that way, constantly ruining the reputation of the Underworld.
"If only I could bring someone here for special training."
As she was thinking about this, she noticed that outside the window, the Blood Moon had started again, and the original zombies that had been lingering outside suddenly raised their heads and looked in this direction.
"As expected... the time has come earlier again, and the Blood Moon will last longer!"
Rias's eyes widened as soon as she made this judgment.
Because the instant the Blood Moon began, with the roars of countless zombies, several new types of zombies appeared!
One type wore military uniforms, but had a bomb that constantly flashed with light in its heart area; another type was a green monster with no genitals or clothing, only grayish-white skin and bone-armor-like skin!
In addition, there was a wild boar and a bear the size of a small car!
"Li Ke! Everyone! Today, I'm afraid we can't watch like we have the past few days!"
Rias had a bad feeling.
She was extremely grateful that she had been strengthening this barrier with her magic power during this time; otherwise, the barrier definitely wouldn't have survived!
"So we need to attack, right?"
Li Ke walked to the firing port and immediately spotted the zombies with bombs strapped to their chests. He quickly drew his sniper rifle, taking down several innocent zombies around him before successfully hitting an approaching zombie in the chest.
With a deafening explosion, Li Ke watched as zombies within a five-meter radius of the target were sent flying into the air, and a large crater appeared beneath his feet. His own zombie body vanished, leaving only a helmet and fragments!
His expression immediately changed.
This power was enough to damage their steel fortifications!
One or two might not be a problem, but this was a horde of zombies!
Li Ke glanced at the numbers; there were quite a few zombies. On average, one in every ten ordinary zombie had a bomb strapped to its chest.
Without further ado, Li Ke sat down at the firing port, set up his sniper rifle, and began firing.
"Rias, are you alright on your end? If things aren't going well, please give me ten minutes if necessary so I can send these two away!"
Li Ke told Rias his decision while shooting at the zombies with bombs in their chests.
Currently, it seems that these steel barriers alone aren't necessarily safe. If Rias's barrier also fails, then they'll have to go through the final procedure.
Li Ke would send everyone away and run. As for those who come later?
Sorry, he doesn't have the ability; he can only help those in front of him.
"I can only estimate when they arrive, but I think it can hold out for a whole day. However, if it takes longer, I'm afraid it won't work."
Rias's expression was also grim. If it were only one or two, or even a thousand or two, then her barrier would be foolproof. After all, it took her several days' worth of magic power to create; even if ten thousand exploding zombies attacked continuously, it could hold out.
The problem was, how long would these zombies last, or rather, would even more powerful ones follow?
"Understood! Everyone, come help!"
Li Ke didn't say anything, immediately starting to fire. The three women didn't hesitate either, picking up their weapons and attacking.
After all, after their trip out, even the lowest-level Mai Shiranui had activated the game system, allowing them to use firearms without training.
Countless tongues of fire relentlessly attacked the swarming zombies below in the darkness. Li Ke quickly abandoned the inconvenient sniper rifle and began spraying bullets down on the zombies with his machine gun.
Countless zombies emitting a green glow fell. Because everyone was focused on attacking the zombies carrying explosives, sparks from explosions constantly flashed in the canyon below.
"I really never imagined I'd do something like this!"
Rin Tohsaka, holding an M60, fired at the dense horde of zombies below while muttering to herself.
"If other magicians saw me like this, they'd probably say I've completely abandoned the Tohsaka family's reputation! And the honor of a magician too!"
Although she said that, Rin's trigger-pulling speed was anything but slow. And the more she fired, the more she felt this easy-to-use weapon was far superior to the cursed bullets she was more adept at.
But that's precisely why Rin exclaimed.
Because cursed bullets require both magic power and practice, and for beginners, their power is only average.
But this thing she held in her hand, while easily usable thanks to the strange power of the world, wasn't difficult to train with.
And—
its power was far greater than her cursed bullets.
"No joke, my curse bullet, developed from the concept of 'causing misfortune by pointing fingers,' even at my full power, is only as powerful as a bullet."
Of course, some can unleash cannonball-like destructive force, but the magic power and time required are immeasurable.
"The sooner we abandon that kind of thing, the better. The most correct path in this world is to use whatever works!"
Li Ke couldn't help but agree; he was a staunch supporter of this school of thought.
Otherwise, he wouldn't have studied both magic and blood energy—all for the sake of practicality.
Blood energy can enhance his physical strength, thereby increasing stamina, various stats, and even the total amount of magic power. Magic power, in turn, can further strengthen his body, allowing it to withstand even stronger surges of blood energy.
This is the path he's currently pursuing.
As for qi (energy) and such, he'll deal with that later. From what he's seen of magic in various worlds so far, it's basically a combination of willpower and life energy, just manifested in different forms.
And this "blood and qi" thing is actually pretty much a combination of spiritual energy and physical energy.
To be honest, he himself felt this was nonsense, but that's how it really is; that's how he felt physically.
He found this strange, because normally, blood Qi should appear to have more life energy, but in practice, Li Ke felt a greater proportion of spiritual energy, and it even had some magical effects.
Frankly, Li Ke was quite shocked, but since the skill book said so, he'd train it that way. After all, he was returning to Arad next month to find G.S.D. and see how his situation was, and whether his blood Qi differed from other berserkers.
For now, he could only be reckless with the help of medkits.
However, their casual conversation ended there. Despite their relentless firing, in less than twenty minutes, the zombies broke through their firepower, erecting a high wall below them and piling up in front of Rias's barrier wall.
The roar of explosions continued, and flames erupted constantly. Li Ke and Rias could only watch helplessly as countless zombies advanced amidst the blasts.
Rias felt the depletion of her runes and magic power on the outer steel wall and frowned, especially at the enormous bears and boars. Their strength was now comparable to some of the weakest low-level devils, and the explosive power of the bombs was greater than she had anticipated.
"These guys are faster and stronger now. And, Li Ke, have you noticed that the zombies carrying explosives are charging at considerable distances…?"
Rias slowly stood up from her chair and raised her hands.
"These zombies indeed being controlled by someone behind them."