"Mature class alien, huh?" Nathan's expression turned solemn. A lot of questions appeared in his mind instantly.
'What is going on? How does he suddenly turn into an alien? It shouldn't be possible unless there's already an alien inside its body.
'If that's the case, the alien must be in a dormant state or in an enclosed space. Is that what the cube is for?
'If this is true, the organization is much more terrifying than I originally thought. The demon shows how afraid it is, so the demon has most likely known about it and got threatened as a result.
'What an evil bastard. The demon doesn't want to turn into aliens like other familiars.
'If this demon has truly become a mature class alien... this feels like the situation of murim type novels, like the one featuring the Heavenly Demon. They're planting insects in their hearts that can kill them if they betray the sect or something. And that's what happens to the demon.'
Nathan's expression turned solemn. If this were true, there would be more aliens than they originally thought. There was a chance that a guy was kidnapped and their familiar was experimented on.
Then, all of a sudden, their familiars turned into aliens. That was his speculation, which he hoped he was wrong.
Nevertheless, the enemy had to be taken down.
As much as he wanted to continue thinking about this problem, he still had to defeat this alien first.
"No need to change the strategy. The fact it has turned into an alien means it possesses no more special ability!" Nathan explained. "Attack him!"
Without hesitation, Nathan released his bullets.
Sera and Anubis improved his power simultaneously, increasing the number of bullets as well as their strength.
He shot on the body, trying to distract the alien.
To his surprise, the alien didn't even bother to do anything, as though it already knew Nathan could do nothing to its body.
The bullets hit the skin but were unable to pierce through it, causing Nathan to be surprised. "Seriously? How thick is that skin?"
Even with Sera, it was actually not enough.
'None of our attacks are effective?' thought Nathan while moving forward. He gathered his Ena in his fist, using the Dragon Fist with 'Fortify' to get the maximum power.
The alien skillfully used the other shield to block it and dispersed his power.
When it was about to hit Nathan, Selena formed the arm and concentrated her Ena into the palm before punching the alien.
The latter struck her fist with the blade and cut the fist.
Brunhild, who had been waiting for her turn this whole time, looped around and struck the alien from the back.
Because the alien had two heads, the other head had been staring at its back. Hence, the alien spun its body and kicked Brunhild.
The latter managed to stop on time, barely avoiding the kick.
Now that her momentum was gone, she had to recharge her momentum.
Sera muttered, "The enemy is too strong. The alien has made it much tougher due to the thick skin. If Nathan's power is effective, we could probably try to make him expose his weak points..."
Sera wondered if the demon could be taken down just by the three of them.
However, Nathan was thinking exactly the same thing.
As he expected, the key to winning against the powerful opponents would be his bullets.
However, the fact it wasn't effective meant he needed something that could boost its power.
'Should I use the soul contract? No, I don't really want to use the soul contract. We also have to consider that this alien has a high growth rate. If that's the case, we can't really prolong this fight.
'But do I have no choice but to use my soul contract?' Nathan's expression soon brightened when he recalled something that the principal did before.
Nathan raised both palms and formed a bullet in each hand.
'That's right. The principal has done it before. I have to do it.' Nathan moved the two bullets toward each other. 'Fuse!'