Leon had to test for a few minutes before he could fully understand how Zen actually worked. Although he created rings that had similar abilities before, he didn't test them. Rather, he didn't have time to test them.
"As expected, Zen is the improved version of Meditation," Leon said. "Even though it is only at level sixty, it can recover one hundred and twenty points of mana per minute. It is two times better, and we don't have to sit down and clear our minds. Here, this is yours."
"Are you sure?" Darya asked.
"Yeah, with the extra intelligence you will obtain from the ring, you will be able to knock down the liches with a single Earth Punch," Leon explained.
The moment Darya put the ring, she noticed how powerful that thing was. If the soldiers on the frontlines obtain that kind of equipment, they would probably win the war against the harvesters.
"How did you learn such a spell?" Darya frowned. "You said that the technology of this world is more advanced than the place you came from, but I never heard of anyone creating magic items and even turning massive monsters into zombies to follow their commands."
"The spell to turn dead monsters into zombies, I learned by chance," Leon answered. "However, I only found the tome after hearing a certain voice… I believe someone gave me that spell to make me slack off. As for the skill to create magic items, I learned after trying to replicate the skill that the creature who summoned me to this world gave to some troublesome guys…"
"… It looks like you and your world are being monitored by some suspicious individuals." Darya frowned. "It also looks like they belong to places that have been assimilated by the system a very long time ago."
"I think so too… even though I wasn't supposed to learn this kind of skill at this point in time, I have no other choice but to use it." Leon explained. " That is why I train day and night in order not to let my body and mind get relaxed by those spells."
The next lich Darya attacked, got knocked down by a single Earth Punch, it looked like Leon wasn't good at noticing that kind of thing and making some calculations. Regardless, using Telekinesis again, Leon moved the body of the monster and sealed its spirit in another ring. At the same time, he started to wonder about what he was doing, was it really fine seal the spirit of a sentient being inside an item? Considering their past, they certainly were sentient beings, but they didn't act like one after leaving the dungeon…
Although Leon was questioning himself, he soon forgot about it because he started to wonder if he could increase the effects of the Zen, if he equips several pieces of equipment that have the same skills. In the end, he couldn't. However, Leon kept using their spirits to create magic items. Ninety percent of the magic items he created came with Zen, so he decided to make stock... those could be useful later.
Although the liches weren't numerous like the wasps, Leon and Darya had to hunt them for a few days before they were certain that no other lich would attack them from behind. Being killed by a surprise attack was scary, but losing control over one's body by being hit by Cursed Ray was even scarier because they wouldn't be able to control their bodies and due to the fact that perhaps the liches would carry them to their death god...
"When the dragons appeared, I thought I was on a bloody fantasy story, but now I feel like I'm in a horror movie."
That kind of feeling would increase with the passage of the time, as long as Leon try to check other worlds, he was bound to feel like that many times. Anyway, after a week of hunting, the only monsters Leon and Darya encountered were coming out from a mausoleum. It was the entrance of the dungeon of the liches' world. Leon started to ponder why the dungeons were like that when undead creatures were nearby.
"Please don't say that you want to get in there.
"To tell you the truth, I don't want to," Leon said. "If those damn liches can make me lose control over my legs in a single attack, I really don't want to see the boss of the dungeon. And if the boss is the thing they call the god of death, I don't want to enter even more."
That being said, Leon was aware that he wouldn't go far by selecting his targets carefully. If he runs away from an obstacle once, soon, he would do it again. Leon didn't want to run away, but he didn't want to face a monster that has the name of a god of death without some preparations either.
"Still, I will challenge the boss… once I feel confident in my skills." Leon said. "Let's train here for a while, we won't recover as much mana as we did on the island, but the rings I created will help us in that regard a little. Besides, we can always buy mana potions in the dungeon shop."
"… You are really insane." Darya let out a long sigh. "What is the plan for the training then?"
"We will do the same as always," Leon answered. "However, this time, we won't attack the liches by surprise. I will let them attack me using Cursed Ray. That way, I will practice my Curse Resistance and even practice a little Full-Recover. Even if they manage to make me lose control over my body, I won't lose my ability to use mana or spells, so it is fine. I will stop them with earth, and you will knock them out. The more undead Trent branches and magic items we obtain, the better."