Since there were no monsters on that planet and Leon doubted that his slimes could do anything against the creatures on Earth. Leon decided to make his slimes attack the Ghost-Swords Ilyana was creating. They wouldn't cause any damage so that it wouldn't be a problem.

Congratulations! The skill Summon Slime has leveled up.

You obtained 01 status points.

Congratulations! The skill Summon Slime has leveled up.

You obtained 01 status points.

Congratulations! The skill Summon Slime has leveled up.

You obtained 01 status points.

...

Much to Leon's surprise, things worked much better than he expected. His slime only shot a single Fireball and leveled up five times. However, the Ghost-Sword that got hit approached Leon's slime and split into two, killing the creature in an instant.

"I guess she is still mad..." Leon rubbed his chin while he was allocating his status points. "Anyway, this might work faster than I expected."

Leon summoned several other slimes, and he noticed that all their status grew around five percent... it was the effect of five level-ups. Although his slimes still couldn't scratch the Ghost-Swords, their attack power was visibly increasing little by little. Now and then, Ilyana summoned monsters would attack the slimes, but it was clear that she was getting less irritated over time.

"It is kind of impressing that she can control her monsters like that, the slimes are slow and only obey simple commands... I guess she also has some kind of skill to increase her control over them."

Leon also noticed that his other skills weren't leveling up. So, even though they could use elemental magic and the same offensive spells Leon could, nothing aside, the skill to summon them would level up. The slimes didn't receive a bonus of attack of skills like Pyromancy or Fire Blessing either.

"I guess it can't be helped... I can't always have what I want. Still, it is kind of relaxing summon monsters and let them fight for me. Unfortunately, that isn't a feeling I should get used to it."

Leon thought he would manage to level up Summon Slime pretty fast since they only needed to attack at a distance using magic. However, soon they ran out of mana. Although their recovery was increasing at a pretty good pace, it would take a while before they could fight for more than a few seconds. In fact, Leon soon understood that the slimes wouldn't be able to fight for more than a few minutes without running out of mana. Considering that they were periodically growing stronger, one percent every time they leveled up, their recovery wouldn't be higher than one hundred. Leon understood that when he finally noticed that their growth rate wouldn't increase over time... it was only one percent of his initial status.

"Well, it doesn't matter. It wasn't like I intended to use them in real combat, after all."

Slimes like to jump in the face of their targets to make them suffocate, but it obviously wouldn't work on Ghost-Swords. Besides, leveling up using a skill like that would happen at the same speed Leon obtain status points in Martial Arts by punching the air.

A few hours later, Leon noticed that he had more than one thousand slimes, so he decided to leave it at that and make them train alone while he learns other spells. He wouldn't level them up at the same speed as Ilyana's, but hoping for that was a bit too much.

"Gnome, it is your turn now," Leon materialized Gnome while he was preparing the mana liquid for the next training session.

"Yahoo! After you learn the spells, you have to let me increase the size of my labyrinth," Gnome said.

Leon sighed, but it couldn't be helped. Gnome was creating an underground labyrinth under the area where Leon's plantation was. He was already having difficulties and wasting some time looking for Gnome in that labyrinth, and he wanted to increase its size even more... it looked like Leon would have to level up Electric Armor and Haste sooner than he expected.

Congratulations! You have learned the skill: Earth Bomb.

Cost: 50 mana

You obtained 01 status points.

Congratulations! You have learned the skill: Earth Arrow Shower.

Cost: 50 mana per second.

You obtained 01 status points.

Although Gnome didn't care about anything but his fun, Leon learned those spells in just two days. Earth Bomb was like Ignite. Leon shot a sphere made of earth at a target, and the sphere would explode, and Earth Arrow Shower was self-explanatory. Regardless, while Gnome was consuming Leon's mana to increase the size of the labyrinth, Leon trained his two new spells for three days until they reached level fifty.

"The problem of using time dilation is the fact that things that don't happen fast enough on Earth... it is kind of hard to focus on training while worrying about everyone."

Leon was quite certain that his friends wouldn't fight amongst themselves anymore, but he couldn't help but worry without receiving news from Ilyana. Since just thinking about his friends always made Leon felt like just relaxing and watching the blue sky, he decided to shake those thoughts out of his head and do something else. Since he wasn't ready for his weekly dose of suffering on Ilyana's hands, Leon decided to level up other spells.

Congratulations! The skill Steel Bullet has leveled up.

You obtained 01 status points.

Congratulations! The skill Steel Arrow has leveled up.

You obtained 01 status points.

Congratulations! The skill Steel Lance has leveled up.

You obtained 01 status points.

Congratulations! The skill Steel Wall has leveled up.

You obtained 01 status points.

Congratulations! The skill Ice Needle has leveled up.

You obtained 01 status points.

"It is time," Ilyana said, using Telepathy.

Although Leon trained his spells trying to forget about that annoying training, Ilyana didn't forget about it. In the end, Leon just sighed and headed to her castle.