Those two are pretty scary to be fair.

There's a limit to physical torture. Mental torture would break someone down. It really is the best.

Mana transfer

Another sect about to go down

Author giving the mc reason to hunt that guy.

"Find out more about him." Dude that's the exact reason a member of your family died.

Btw I think you used the word 'fearful' wrong.

It was a roller coaster of emotions, except it only peaked once and was just downhill from there until the end.

Source?

Finally! School life is wholesome but mercenary days were more interesting.

I wouldn't even want to win if that's my punishment.

Death. I would assume that they fear being hunted down. They know full well about the capabilities of the organisation, and it's the same the other way around. Why bother when it's going to end up the same right?

I mean, I suppose that also works and I'm just looking into it too deeply. And of course, I know that a simple stick couldn't be a spear. I just thought that what if those eyes would always appear whenever he picks up anything that activates his spear skills, which in most cases would be an actual spear.

+1 harem. Also, those eyes should be some sort of foreshadowing. Is someone watching him whenever he picks up a spear?
There's also his comment about lightning magic.

No, I only read on this website. And his name has always been Denis. Why is everyone saying he's Denji?

Same. I now hate that instructo

Who's Denji? Isn't his name Denis?

I think because it's not really their skill. It's a skill granted to them. It's more like borrowed power, not really theirs if that makes more sense.

I've seen this exact moment just from the first time that his skill was introduced. It's very predictable and nothing too impressive as long as you pay attention to it.

He put it on his head.