MC enters the world in legendary hard mode. If in the original game the world slowly sends mid boss, to big boss (es), to bbg over a period of time, MC arrives in the world and the plot gets fast forwarded. The mid bosses arrives rather early. It leads to some unrealistic recovery time, like I get they got priests and stuff but still, this guy be dying and he's jumping around again by day3 bruuuh. Then, instead of going through the big end bosses one by one, this world be like ya can surely take em right? After all, you have cheat in-depth knowledge of this world. Here have them all at once. Like bruuuh but it does balance it well. Then when I thought bbg battle time there's bigger bbg appearing. Ahaha MC was fckd.

And plus, MC know that the library will get attacked, but there is no sense of urgency from the MC. Even when all students got caught there is no side characters dialogue such as "help me!" "We will die!", "Who do you think I am?"

They slowly explained to the reader that this world is split into two. A human world and a demon world. Demon is a very ambitious race. So ambitious that their race was split into two also: Original Demon who only want to live in their own world and Devils who want to conquered everything for power. Original Demons lost the war and Devils are ready to invade the Human world now. Knowing that, God created a powerful artifact called First Rune so humans can fight back. But if not used properly, this artifact can destroy the world as well. So, after the war end, the first hero seal the First Rune into seven artifact and hide it around the world

Like, there was supposed to be this important character we can relate too. But because his relationship with Theo was skipped, I didn't feel anything when he died. Important character but felt like an NPC

His name is Mathias. He infiltrated the school and disguised himself as a Dimensional Magic teacher so he can teach Theo while spying on him at the same time. The thing is, in that year, there are too many problems Theo had to solved; from the awakening of evil monsters to war between factions. That means Theo was almost never at school to interract with Mathias. Especially after the Time Skip. And I felt like that was such a missed opportunity. I was hoping for more back and forth. More sly remarks and lies so both of them won't realized they are trying to gauge each other.

I really don't get why author decided to use a time skip here. Just treat it like... Naruto's training montage or something. No big battles that can destroy the world, but still important to show for character development. This time skip made Mathias' bleak past came out of NOWHERE. There is no buildup at all

In this novel, Mathias was not the only final boss. We have another one, named Anirza. But because the novel is already near the ending, rather than writing a different battle arc for them to shine (for example, chapter 1-5 is for Mathias' battle. And chapter 6-10 is for Anirza's battle), both of them came out AT THE SAME TIME. No breather at all. It felt bloated because we are now looking at two different POVes.

And speaking about no breather, they did a sacrifice play too quickly in the war arc. Character A nearly died, but character B saved them. Character B nearly died, but Character C saved them. I applaud author who's not afraid to kill their characters, but not this quickly either. Don't treat your characters' death as a shock factor, it's making their sacrifice play useless

The first Prince and Leon's older brother, Kuhn were supposed to be these cunning guy who will do anything to inherit their respective throne. They nearly destroy Theo's credibility with bad rumor and kept undermining the Third Prince's authority. But they lost because they self-destruct??? Not because of Theo's counter attack or anything? You two are smart characters, how they hell did you stumble this bad?!