"Hmm..." Feifei looked around upon arriving at Layer 2, quickly noticing that the region was filled with miasma that was harmful to her. However, she wasn't alarmed, instead deciding to camouflage herself into her surroundings.

For a moment, her presence had vanished. Nevertheless, she was still there. It was just that she felt no different to the air based on her presence. So, even when a demon walked past her and even saw her, it didn't register her in its mind, proceeding about as it went.

Feifei scanned the demon through her senses, shuddering upon noticing its tough body, immediately realizing that she wasn't its opponent. She noticed that it was green in color. 'The moment I touch it, it would be aware of my presence.'

Feifei calmly walked forth, feeling a faint burning sensation as she noticed that the miasma was proving to be an issue. She then expanded her sensory ability's range, judging the strength a demon possessed, soon noticing the relation to their colors.

Soon, she discovered the weakest of the demons, a White Demon, approaching it stealthily. A White Demon was typically called a Demon Child, having a weight below 150 kilograms. They were incredibly rare and didn't even have any Demon Cores within their bodies.

Feifei approached a White Demon and stood alarmingly close to it, marching alongside it before she expanded the range of the passive ability that hid her presence, enveloping the White Demon into it as well.

Now that the White Demon's presence was also ignored by the other demons, Feifei grabbed hold of it, shutting its mouth first to prevent it from speaking, quickly leaving the place as she suppressed the White Demon, turning her hands into claws as she dug them into its body.

The White Demon's body rapidly thinned out as its essence was absorbed by Feifei. She then digested the essence, nodding as she understood the concept at place. She smiled, causing the absorbed essence to take effect, noticing that the miasma no longer troubled her.

Rather, it began to heal her injuries, causing her to feel invigorated. 'Indeed, it was the best decision to have collected the strongest of passive abilities to complement myself. If not for them, I would have had an impossible time surviving here.'

She was then worried as she thought to herself, 'How did Krune fare? Is he okay?'

However, soon far, upon thinking who he was, Feifei placated herself. 'He should be fine. That silly wisp won't die.'

'Now, I have to survive until I meet up with him,' she thought, turning her skin white as her body began to resemble a White Demon. She then found a second White Demon, repeating the same before she devoured its essence, furthering her mimicking of the White Demon.

By her tenth kill, she resembled an actual White Demon, also noticing that she was able to absorb the miasma to grow stronger. 'However, this process seems to have some limitations.'

She understood it immediately after turning herself into a White Demon. Once she summoned her tablet and looked at the title of Layer 2, she understood the concept at play.

Feifei then focused on the next demon on the list, a Violet Demon. Using her ability to make her presence similar to air, she approached a Violet Demon, suddenly acting a bit flustered, pointing away from the marching line as she said, "Something seems off about there. I think a lone human is wandering there."

"Where?" Brought about by instincts, the Violet Demon hurriedly followed her, not realizing that it was the only one that had moved out of the line. As Feifei had wrapped the passive ability's effect on the two of them, its actions went unnoticed by the other demons.

Feifei then ran through the ground, soon arriving behind a hill of sorts, having scouted before that there were no demon eyes in the place. She pointed at the place, saying, "Here!"

"Here?" The Violet Demon arrived at the place, looking around in confusion as it was unable to see any humans. It then faced the White Demon but acted like it hadn't seen anyone, scratching its head in confusion when a force slammed onto its back, causing it to tumble to the ground.

A Monster Gecko appeared and sat atop it, locking it to the place. Feifei then plunged her claws into the Violet Demon's back, shocked when she realized she barely scratched it. 'And this was already the weakest of the Violet Demons.'

Thankfully, her claws managed to come into contact with the Violet Demon's blood, beginning to absorb its essence using it, causing the Violet Demon to shrivel up, soon turning into a pile of dust.

Feifei had also absorbed its Demon Core into her, closing her eyes as she digested the gains from the essence she had absorbed. The Monster Gecko stood beside her, guarding her. For a moment, it seemed like a regular Monster Gecko.

However, once Feifei absorbed the Violet Demon Core, the Monster Gecko grinned a bit, beginning to absorb the miasma into itself. It seemed that even it was capable of this feat. It then arrived before the hill, using its claws to drill into it, creating a cave. The cave was big enough for Feifei to sit within and meditate.

After all, she was now able to cultivate using the miasma. So, she was unwilling to waste any time moving around at risk. If she came across a powerful demon against whom her passive abilities didn't work, she would be in danger. Even though her appearance was no different to a White Demon right now, she didn't wish to take any chances.

Now that she realized she could increase her weight by absorbing the miasma and grow stronger, she was unwilling to stop until she grew to the maximum level the essence from the Violet Demon could allow her to do sothe peak as a Violet Demon, 200 kilograms.

Once the cave was dug, the Monster Gecko vanished. Feifei just got up, intending to head into the cave, when she noticed a gigantic figure flying in the air high up, causing her shock at its size, wondering just how strong it would be based on the standards of Layer 2.

However, upon seeing the familiar figure, she recalled the scene she had witnessed in Layer 3. 'That's Krune's Cloud Whale!'

Upon extending her passive sensory ability, she determined that it was indeed him inside the Cloud Whale, wearing the same Monster Gecko armor. But, now that her appearance was no different to a demon, he was unable to notice her as the Cloud Whale flashed past.

As it was traveling at four times the speed of sound, it vanished as fast as it had arrived. Right as Feifei intended to reach, intense shockwaves slammed into her, causing her to scream in pain as she hurriedly condensed the Monster Gecko around her to absorb all the shockwaves.