I Can Make Everything Level UP

After cooling down his head, Billy felt the gravity of his injuries. They were hurting a lot more now than before… Although he only lost thirty percent of his health, the pain was a lot worse than that. He tried to use Spiritual Exchange, and while it restored his health, the effect had been halved, and the wounds weren't closing… When Billy checked his status, he found the answer. It seemed that he got caught a negative effect, it has been so long since he saw one of those in action...

Billy (Corrosion)- Lv 149 33.500/69.000 EXP

HP: 511/ 692

MP: 234/ 1581

SP: 565/ 836

"It seems this is a negative effect that decreases the effect of healing spells… Still, it should disappear by itself soon enough," Billy thought while he rubbed his chin.

"Billy, are you alright?" Alexander asked after he approached.

"More or less," Billy replied. "In any case, we don't have time to waste. We need to get the materials and then… What kind of materials can we get from this thing?"

Alexander had no idea, and when he looked at Sarah, she just shrugged. As far as Billy knows, even wingless dragons are pretty powerful creatures, so their entire bodies should make a lot of good equipment… Taking the whole body outside was probably for the best, but soon the dungeon will begin to change, and the monsters won't spawn until that is completed. So, Billy won't have enough mana, even if he makes a vehicle right there to transport that massive body…

One week had passed since everyone felt the tremor in the dungeon. Now and then, they still happened, and that was a sign that the dungeon was still changing its layout. Paule and the other adventurers imagined that Billy and his party had won. Still, while they were supposed to have returned three days ago since the monsters weren't spawning, they didn't show up until now. After another day, the dungeon finally stopped trembling, and Paule was having a headache… The adventurers confirmed that the layout of the dungeon had changed, and the monsters were spawning again. There was no sign of the Billy, Alexander, and Sarah…

"This job is sometimes the worst… I hate when I have to tell the families of the deceased the bad news…" Paule thought.

On the night of that day, she was preparing her things for the travel. She will have to go to the capital, after all… However, some noise coming from the dungeon stopped her, and when she came to check, she saw a weird vehicle pulling a massive cart behind itself, and on top of that, she saw an oversized lizard. The ones driving the vehicle were Billy and his friends.

"You guys… Survived?" Paule asked

"Yes, we had to wait for a while since… It is hard to explain," Billy said. "Anyway, mission accomplished. I will return in one week to proceed with the creation of the building that my guild will be. In the meantime, I will leave in your hands things related to the exploration of the dungeon."

"Wait a minute… Is that the guardian? Where are you taking that?" Paule asked.

"Where exactly can I store this?" Billy asked. "I will use some of the materials, and then I will sell the remaining parts to Jean, don't worry about it. See you later."

Paule had many more things to say, but Billy and the others left before she could ask. Since they returned alone, it was safe to assume that the others perished… but after seeing what they had to face, Paule wasn't surprised. Even Billy still had those wounds in his body, even though their sizes decreased considerably.

Billy decided to leave at night because his tunnels weren't large enough to transport the dragon and because he used the extra time to gather mana from the monsters and to send it to his engine. That was one of the reasons they only left the dungeon after quite a while… The other was the fact that the layout of the dungeon changed. His new magic cart could fire ice bullets that could freeze all the monsters on the way, but they also consumed mana to be shot, and their power wasn't based on Billy's.

"I am worried… I need to destroy those things before they become well known among the population and some crazy dude begins to mass-produce them," Billy thought.

Making his life as convenient as possible had that kind of demerit… In any case, they returned home before anyone could see the magic batmobile, and Billy created a new hideout connected to his tunnels where he hid the massive body of the dragon. Weirdly enough, the body of the creature wasn't rotting… Even though it had the decay skill.

"If this weren't a poison-type monster, I would want to try to eat its meat," Billy said.

"I am not that brave… It doesn't look taste either," Alexander said.

"I guess the mission is over. I hope that we can work together soon enough," Sarah said. "Hopefully, with something less intense and time-consuming."

"I couldn't agree more," Billy said. "Well, until later."

Billy hurried home, and then he smiled when he saw his wives. As usual, he hugged and then gropped them in some parts, but he wasn't scolded this time. He got a chop in the head. Since Natalie was the one who did it, it hurt quite a bit.

"This isn't time for that… What happened? What are those nasty wounds?" Natalie asked.

"It is a long and bloody story. You don't want to hear it," Billy said.

"We have time now since it seems that this job is over," Kate said.

"Well, if you say so… A long time ago, around nineteen years ago, a handsome and robust boy was born in a tribe of green-eyed spearmen," Billy said, but he stopped when he got hit again. "You guys don't get my humor…"