Sure, I'll give a brief take on each scan.
So the first paragraph obviously has nothing to do with greater concepts at work- it merely establishes that nature can react (how they mean this is beyond me). Light and Dark aren't mentioned as some abstract greater ideas, just "things" affecting the state of nature.
Second paragraph... no mention of anything other than "forgive me master, for I must go all out, just this once".
The next paragraph (bit blurry by the way, I assume these pictures are taken on camera?) is arguably the most notable if you were to defend this as 100% no questions asked concept manip, but even then it comes failing as the only mention of anything that could be interpreted as concept manip is something being "fundamentally wrong" with the universe. That said... this could mean a lot of things, as I said in my original comment, this could be perceived as pretty much anything you choose. Concept manip isn't guaranteed but it isn't made impossible, basically.
Again the next paragraph seems to actually debunk the possibility of concepts, instead focusing on the "fundamental" state of the universe being that of nature rather than one of concepts. Dark harms nature, light bolsters it. Dark matter stuff seems to have some form of Morality Manipulation though, if we take Dark = Evil and Light = Good (seems to be the implication).
Next one, pretty much no content regarding your question.
Left paragraph in this scan seems to be musings on the need for evil/darkness/etc, no concept manip here.
Right side touches on what I got from before, that this is more of a balance of [insert choice of things here], and doesn't inherently need to be concept manip.
Ditto for the next scan. "We are all a mixture of light and dark". This is what led me to the whole D&D comparison since everybody is just a mixture of Chaos and Law, which by default should be taken as a form of cosmic creation energy- hence why I wouldn't say this is concept manip from the get-go. The next paragraph expands on this so I'll group it in here.
Next scan has very little to do with concept manip, just describes the dangers of disrupting the balance.
The Day 26 scan just talks about the ultimate battle and more of his father, no concept manip. Same for the further paragrpahs within it.
The next scan does make Dark Matter a bit more interesting as far as hax goes but it doesn't make it conceptual as a force.
Ditto for the next one, just establishes Dark Matter affects mind and spirit (though not very well apparently).
The last scan could also be interpreted as conceptual manipulation, what with Darkness disturbing the essence of the world. But it isn't explicit enough for me since concept manip is something of an important ability.
