He became a vessel of an evil god when he was isekai'd so, when he uses his powers sometimes the powers he received from the evil god leaks out. Also the ether which he uses to recover mana is scarce on earth so, he tends to save mana.

00-01 - Waaaah I killed everyone, why did everyone have to die!! Then unknown woman is shown to have protected and given up her life and soul to save the person crying (hinted to be the MC crying).

01-01 + 01-02 - Demon lord broadcasts about how the humans are unjust for invading the demons and cowards for summoning and relying on summoned heroes and is attacked by a legendary assassin. Assassin turns out to be MC who invaded the Demon King castle to steal an item so he can go back to earth.

02-02 - MC is looking around at the new futuristic and goes to buy clothes with another unknown woman.

05-00 - MC is at school and is sort of getting bullied / hated on because he doesn't seem to try at all, messes with the merit system and both students and teachers wants him expelled but teachers eventually decide to just ignore him.

04-?? - Perspective of a female discipline student about how she is so vexed at the MC and dislikes him but is convinced by her twin brother to ignore him like the teachers say and focus on more important things.

So in short the prologue just jumps around at random points in the story and only the first two parts actually brings anything to the story while the last three parts here are just random stuff from the story and even in the prologue the author seemingly breaks their own set chronological order by having what is decided at the end of 05-00 be a thing in 04-??. Which doesn't exactly set a good precedence.

First off stats are divided in the following.

The 5 commonly known stats

Strength + Stamina + Mind + Resistance + Agility

and then two hidden stats that only the MC + co knows about and the people in the otherworld called Falandia that the MC went to or people who also went there.

Mana + Skill.

The stats are pretty straight forward, though mind is probably worth to mention that it is the stat that decides how well or how much mana a person can use. It is also worth to mention that you need to be aware of your stats to raise them. The skill stat is the most special one and the reason why the MC is strong.

First off the stats are ranked from E-D-C-B-A-AA-AAA-S (hinted that there is also SS-SSS) each rank can have -/+ everyone also has a starting stat value and a maximum stat value, stats can be raised through training but will also get lower if one doesn't train them, the only exception is the skill stat that always starts at E- but has no max stat. The E stat is only a stat in theory and all humans start with at least D in all stats and the high rankers usually have around A-AA-AAA in most if not all stats. The MC of course used to have E as his starting value and his max stat in all stats is D.

How the skill stat works is that it's a multiplier to all the stats a person has and decides how much of a stats value someone can use. The skill stat is based off a person knowledge, experience, battle sense, tactics and so on. But because of how earth and Garesto has no idea about the stat Skill and they use sci-fi weapons that let's them fight on auto-pilot and only care about raising their stats, most of them have the skill stat at E-, E or E+ which means they can only access about 1-3% of their stats. The MC on the other hand has his skill stat at S but then shortly into the story it is raised to S+ which means he can use 300% of his stats.

So according to the information given by the author a A in a stat can be translated into 1000 in stat value but because they can only use 1-3% the stat value they can use is somewhere between 10-30 the MC on the other hand that has D in all stats can be translated into 100 in stat value but at a 300% effect so he can use a stat value of 300.

On top of that he can use a spell that just raises all his stats except for mana but because of him having a trauma about killing people up front he never raises them above C since then he would risk instantly killing people instead of knocking them out.

So because of the Skill stat the MC is the strongest but at the same time he is also the weakest since if other people just raised their skill stats he would easily be defeated when it comes to just pure stats of course the MC has other tricks up his sleeve to win.

But anyway because of these settings everyone looks down on the MC and people always goes around stat this and stat that becaues of how the culture of Garesto has influenced them. So statuism has become a very real thing and a lot of the story is about how people with low stats lost their work or dreams which in turn made them turn to crime and terrorism, though people with high stats has also done it.

First off stats is a major part of the plot and if you read the above you'll know about the skill stat and how it works as a multiplier to other stats. If you didn't then just know that the MC get's 300% out of his stats because of his high skill stat and he discovered it had gotten stronger because a spell he used was much stronger then normal. The next chapter after explaining how the Skill stat is a multiplier that just affects all other stats the MC starts spitting blood because he was flustered and then rushed through the air and took dmg from the air resistance which the author explains as the MC has to actively do stuff to mitigate the air resistance or he can only use 10% of his resistance which was why he took dmg, okey fine not sure how that would affect his resistance stat that makes his body sturdier but whatever.

The author goes on and on with how stats are everything and that a hulk of a man can easily be tossed around by a sniviling toddler if the toddler has much higher stats. Okey we get it stats are everything and you've told us this like 5 times already. Then a department store get's attacked by terrorists and a mother tries to get past the security guards but is easily stopped and were told by the author because she is a woman she has no chance to push past a man... okey sure your whole world building has no use infront of a physical fight between a man and a woman, I can deal with that....

Almost every second chapter the author will talk about how the MC has super sense/perceptions/reflexes and so on. How in a large dome around himself he can detect everyone's movement and easily track dozens of people that are surveiling him. We then get told that during battle he uses this in conjungtion with a wind spell that let's him feel and track the slightest movement that disturbs the air and that he can easily process and use all this information in an instant. His sense are so sharp that just looking at the slightest hint of a movement a person does he can instantly calculate where they are headed, at what speed and where they will land. If he can see them with his eyes he can from their facial expressions and bodily movement know what they are thinking, feeling or about to do because of his senses and his brains ability to process all the information it get's which he hates and wishes he could stop doing but it's impossible. He can even sense where people are at, moving towards or even doing through walls.

But yeah he has a major weakness unbeknownst to himself... every time he thinks of the future or especially when he eats he just zones and all his super senses turns off and he only reacts if someone touches him. Okey sure he has a weakness why not. But then the author decides that the MC has to be ambushed by an enemy but you know it can't be helped because the MC uses a spell that enhances his eye sight and let's him see a persons soul so because of that he was unprepared especially because the enemy is wearing a mech suit that sort of covers the soul! Oh and he can only track living beings so drones are also a major weakness! Oh oh and you know whenever he focuses on his thoughts all his senses also just turns off and he only reacts to killing intent, mana or hostility! Oh oh oh oh and! Seriously author you've explained how the MC has super sense in like 10 different ways and how he uses it also seemingly changes every few chapters and you for some reason have to change how he does it to add weaknesses upon weaknesses on him... please stop mentioning his super senses or just stick to a setting....

Like to give a further example on the super senses at one point the MC is being shot at until a persons ammo runs out but he's able to catch each and every single bullet even when being shot at from short range. Then afterwards he is shot at by an enhanced sci-fi gatling gun and is able to catch/block every single bullet with a mana enhanced blanket. But then after catching/blocking all of those that flies at the speed of a bullet (since their actual bullets fired from guns) or seemingly even faster, during the same fight the enemy starts attacking at "ALMOST" the speed of a bullet and even with the MC's super senses and enhanced eyesight he is "barely" able to avoid the attacks and is lucky the enemy can only attack in a straight line because of the speed or he would be in danger or get killed.... Like seriously author you just had him catch BULLETS that flies at the SPEED OF BULLETS in the same fight but now that the enemy moves at ALMOST THE SPEED OF A BULLET the MC is having trouble reacting to that kind of speed????

Lastly in the same fight after defeating the mech wearing enemy and beating them up so badly their mechsuit is a wreck that can barely move and also frying the system by using magic while using power word fear and sleep to first traumatize the enemy and then force them to sleep. The floor breaks and somehow the enemy get's away even though they were right beside the MC while falling down and his super senses doesn't even react to it. Then we get the probably silliest explanation I've ever read that somehow the mechsuit has an escape system and that the system is installed seperatly so even though the mechsuits system is fried it can still activate and escape with the user. But whats silly is that even if that was true how the F does a seperate escape system manage to move a mechsuit that is completely devestated already. That would be like I don't know have a computer be completely smashed and burnt to a crisp after frying it's motherboard but then go no no it's fine because the computer has a seperate motherboard and bios so even though all the parts are broken it still works no worries..... Honestly the whole department store fight felt like it was riddled with plot holes.

I could probably go on and on like this but basically whenever it comes to the MC the author will in almost every single chapter talk about how strong the MC is or have him do some kind of feat to show of his strength only to then later on change the MC's strength willy nilly or add a reason to why the MC all of a sudden has a weakness for seemingly comedy reasons or to allow an enemy to actually have a chance but that in turn breaks the settings or everything the author has set up beforehand.

a part from the divine skills

Hidden Bomb goes of, MC saves the day but he still apologizes stating that "I don't have the right to be thanked. All of this is due to my negligence. So, sorry."

This line is copied word by word from the novel.

It would have been still bearable if he held some position or was accountable or responsible for the safety of the people he saved but no, he doesn't but he still ends up apologizing.