Elysium

Elysium: MANTIS VS Evil Ghosts

“.. Welp, onto the second phase of the boss fight.”

The System wanted to tell him to do some gacha first, afterall his luck was ridiculous so he might very well get something that would help them to get out of this precarious situation.

Unfortunately, Juviel had already entered battle mode, so she decided not to interrupt him. He recalled how to use the ‘Energy Harness’ skill and tried it out. He was a bit wary as it was his first time trying it out, but it succeeded without much effort.

A black flame sparked into existence on his palm. He was a bit surprised, excuse me what? He wasn't startled for long though, well, he didn't have time to, creepy howls started sounding from beneath the ground. So he decided to try covering his fists with the flames and jump after punching the ground with all his might.

This punch would be able to severely injure an Emperor Rank Honkai Beast, so how could the floor of this place handle it? It immediately shattered like glass, revealing transparent grey humanoid creatures with ghastly features. Red eyes, no feet, claws for hands and some even had weapons.

Most importantly.. There were too many. He looked left and right, but there was no end in sight, to the ghosts. The ghosts were already pouncing on him so he gritted his teeth and hopped into the hell hole.

He threw punches left and right, each punch killing a ghost. Using all his knowledge, he managed to fully utilise his entire body, thus very few attacks landed on him. The ‘normal’ ghosts didn't do much damage, but the weapon wielding ones made him feel numb whenever they managed to land a hit.

…

One hour later,

At this point he managed to kill around 3600+ ghosts, however there were still no signs of the ghosts decreasing whatsoever. The fatigue started building up, however it wasn't physical fatigue. He had Extreme Stamina(S), which was one rank lower than the one Fu Hua had. But S rank was still S rank, so he wouldn't feel exhausted even if he fought fought for 3 days nonstop, what more one hour?

Rather it was mental fatigue, although his mental strength had been enhanced a bit due to Garuda+, it didn't increase it by too much. Let's assume there are 7 tiers of mental strength or Concentration as a better term.

The 1st Tier represents normal people.

The 2nd Tier represents people who can focus on a single thing for an hour without getting distracted.

The 3rd Tier  represents people who can focus on a single thing for hours without getting mentally fatigued.

The 4th Tier represents someone being capable of focusing on two things at the same time with 60% of his focus on both and be able to remain focused for an hour. This person can remain focused for a day on a single thing until his/her body gives in first.

The 5th Tier represents people who can fully focus on two things with 80% of their focus on each for around an hour. The only thing restricting them are their bodies as they can be focused on one thing for days.

The 6th Tier represents someone who can fully focus on 1 thing with 200% of their focus, 2 things with 120% of their focus on both or can focus on 3 things instead with 60% of their focus on each.

Finally, the 7th tier represents someone who can fully focus on 1 thing with 300% of their focus, 2 things with 150% of their focus or 3 things with 200% of their focus on each. This person can use 3 different techniques at once or cast the sane technique thrice in an instant.

For example, if Fu Hua had Tier 7 Concentration, she could easily use 3 Phoenix attacks at the same time with each having 200% of her focus, thus making them stronger then before.