Charizma

Didn't say it was cut and dry, but he has no responsibility to save either. That one is a child changes little, since she would put him back under her family's control as soon as the opportunity presents itself. It can be argued that he has good reason to save neither, since both will keep him bound given the opportunity. If not for the potential danger of leaving enemies to chase you down, then I'd say leaving the two as bait would be best. Saving the girl wouldn't help to protect himself from the enemies though, so with this logic he should help the guard. However, if that worked, then the guard might kill him for letting his charge die, so iirc, the option is to save the girl (a responsibility likely to get you killed or recaptured later) or the guard (likely to capture or kill you since you let his charge die). I'd take my chances escaping.

His friends weren't keeping up before the shadow trial, so having an actual reason to separate is much better than most novels that force their growth or have them tag along with plot-armor. /spoiler/ I agree with your issue of him fighting for millenia, then regressing with the time-boy for at least tens of millenia, then going back the normal world as if he just went on a long vacation. The power system also got confusing here, with him being able to fight the void outworlder, but essentially getting crushed by the aura of the principal and his brother.

It is a problem. When you choose to read MTL, you accept atrocious writing. When you choose not to read MTL, you expect better.

He is on someone else's property. A property he knows is owned by a man he hasn't met yet, and he responds to a simple and extremely common question with hostility. That is "how". This wasn't worth remembering, so I have forgotten it, but I'd bet he did other idiotic things earlier too.

This guy's morality is all over the place.

It's a decent story at best. Spelling and grammar get a solid 1. Character and world building get a 2, arguably a 3 for character building. Though at chapter 32 the MC seems to be getting dumber. Power system gets a 3, maybe 4.

Except he agreed to a pill for each chore and already paid one pill.

I've already let this fall from my mind, so you might be right. I do recall my point was to tell the author that pulling new skills or items out of nowhere is not a good method of development.

Apparently so. Wormhole, spear-torch, remote activation, ranged mana sense with which he has been memorizing many different mana signatures... Damian has grown up quite well in the time skip... oh wait. :p

I must disagree with you. It is your work, but that is exactly how it should go. Him pulling out skills and powers right as they are needed, but never mentioned before, comes across as, and is, plot armor. The wormhole came from nowhere and is going to create so many plot holes unless you use it a lot. The spear having such an ability makes sense, but when did Damian have time to study it? This is just my opinion, but I feel you are rushing the story and it is detrimental. Having a few chapters detailing him practicing with the spear would have been beneficial. I've read a lot and I have seen many promising LNs be ruined by the pulling-a-rabbit-out-of-a-hat trope.