In the restaurant of the Demon King's Bedroom.

Lolina, Lilina, Fanny, and Angel gathered around the table.

Fanny looked at the food in front of her curiously, and she hesitated. A quirky dish called a burger, a yellow bun with sesame seeds sandwiched with fried chicken, greens, and a white sauce. A small dish of flour-coated fried chicken nuggets, plus a glass of her favorite Fat House Happy Water.

Strange dinner.

Fanny picked up the burger, opened her small mouth, and reluctantly bit down on the upper and lower ends.

Take a bite.

Fanny's eyes lit up.

"It's delicious!"

"If it's delicious, you can eat more."

Roy replied with a smile.

Pick up a burger and bite into it, it tastes even better than the McDonald's burger in the previous life.

It was developed by Lilina over the course of a week using the Head Chef skin and the help of other maids. With the popularization of the production method, ordinary maids can easily make delicious hamburgers and fried chicken.

The two cat girls gulped down and poured a drink from time to time.

Angel looked at everyone pitifully, she touched her little belly, and didn't dare to let go of eating.

Roy suddenly asked:

"Lolina, have you gained weight lately?"

"Young Master, don't want to lie to me, it's impossible to gain weight."

Lolina kept talking and spoke indistinctly.

Roy reached out and touched Lolina and Lilina's little bellies, feeling a little fleshy, it seemed to have fat. Roy touched his hand dishonestly.

"Meow!"

Lolina jumped up and clutched her ass to prevent Roy from touching it.

Roy looked at his palm, recalled the difference in feel, and said:

"Sure enough, I'm fat."

"Not really!"

Succubi do accumulate fat, however, their fat only accumulates on their buttocks and breasts. Getting bigger means getting fat, which is what Roy found out recently from reading the literature on succubus research.

This is the gift of making female creatures of other races jealous to the point of separation.

Lolina didn't admit to gaining weight, she sat down and continued to eat burgers and drink fat house happy water. Roy won't hide if she touches her again, anyway, the fact that she is fat is exposed, there is no need to disguise.

Examined the next two cat girls.

It's all fat.

During this time, the food was a little good, the oil and water were big, and there was too much sugar in the fat house happy water.

Roy reached out and pinched Fanny's cheek again.

It's only been a week, and the little girl's cheeks have become fleshy.

"Is the burger good?"

Little Lori feasted on it, bothering to answer Roy's question, and let out a string of muffled voices.

Roy couldn't stop laughing.

At this time, Angel made a whining sound, she looked at the food on the table in distress, in order to maintain her figure, she did not dare to eat.

Roy Road:

"You won't gain weight if you eat it, you're a priest, cultivating the light element quenching body."

Angel was stunned for a long time, and with a bang, she got up.

"That's right! How did I forget this!? ”

Now she was no longer distressed, and as if she was hungry and pounced, she picked up the hamburger and ate it.

"You'd better keep exercising and eat less, or the light element won't save you."

Roy finally touched his belly, it felt like it was bulging out, and I don't know if it was an illusion.

No way.

You can't grow a beer belly, you have to exercise.

At this moment, there was a knock in the restaurant, and a small head sticked out of the doorway.

"It's Gina, come in."

This rustic little bookworm succubus pushed the door in, closed the door in a desolate panic, and was attracted by the food that everyone ate before he could speak. Roy wanted to give his share to Fanny, but was intercepted and divided between the two cat girls. I had no choice but to go to the kitchen and get a new one and let Gina sit down to eat.

"How's the study of the magic motive?"

Gina munched on her burger as she reported back on the Institute's research.

"Lord Demon King, according to your requirements, different models of large, medium, small, and micro magic motives have been made, as long as the magic power is input, it can provide stable and continuous torque output."

"Well, that's good. You eat first, and then take me to see it after eating. ”

"Uh-huh, thank you, Lord Demon."

The little succubus nodded happily and enjoyed the hamburger.

Roy looked Gina up and down and asked:

"Have you gained weight lately?"

"Uh......h Not...... There is no ......"

Gina blushed and vetoed.

While everyone waited, the doors of the room were pushed open and Mavis walked in.

"Yo, the Empress is here."

"Hmm."

Mavis replied lightly, and walked up to Fanny, and the mother and daughter hugged each other in love.

"Mom, come and grow this hamburger, it's even better than cake!"

Mavis picked it up and took a bite, then her eyes lit up, and she finished a burger in an elegant little bite, and looked at Roy with a sigh of interest.

Roy couldn't help but laugh and gestured to Lilina.

Cat Lady brought some more.

"You're having a lot of fun eating and drinking, where is my caravan going to you?"

"Well, acquired some rags."

Mavis replied.

Roy nodded, the tattered in the elf's mouth was a work of art in the eyes of humans.

Mavis ate 3 hamburgers in one go, and wanted to eat them again, probably feeling the strange eyes around her, so she stopped embarrassedly. Facing Roy's gaze, he said embarrassedly:

"Although you are not a good person, the things you walk are quite delicious."

"Mavis, how about selling this thing to your elves?"

Mavis thought for a moment and said:

"Yes, as long as you don't play tricks."

"Of course."

After a brief conversation, Mavis hugged Fanny and whispered.

Roy took the two cat girls and Gina and went to the research institute.

Howard and Cameron are tinkering with a large metal device, almost 1m³ in size, with an elliptical cylinder in the middle, an output shaft, and a magic inlet. It looks bland on the outside.

The two cat mothers put aside the fast food in the paper package.

Lowy asks about the specifics.

The three of Gina explained the principle.

Howard and Cameron were thrilled to understand the significance of their involvement in this invention.

The power source is the heart of all machinery.

"Medium, medium and small magic motives ensure torque, so they use the combination of wind and fire magic arrays, which can ensure a strong torque output. According to the energy algorithm provided by the Demon King, the efficiency of converting mana into mechanical energy is 78%. ”

Gina pulled out another palm-sized device.

"Small and miniature magic motives use pure arcane magic arrays, reducing the size and energy efficiency of up to 89%."

"The oversized magic motive is still being made, and Luffy says there aren't enough ores."

Roy inspected the results of the study, was very satisfied, and gave new instructions.

"The oversized magic motive will be put aside for the time being. Start with the drive, make the rails and minecarts, and the small mining equipment for solo use. I'll hire two high-level miners to work with you on this piece. ”

The power source is there.

The first place to apply is naturally mining.

Gina hesitated:

"Lord Demon King, we may not have enough manpower, and goblins are good at mechanics."

"Well, I see, go back and recruit some goblin mechanics."