MC is a guy who was brought from Earth into the new, crazy dystopian world where it wouldn't be strange to be killed at anytime, as a summoned hero by the Empire.

Unfortunately, he has no visibly good combat powers, so he's deemed a failure, kicked out of the palace, and forced to work as a labourer for three years in what can be likened to hell! He is only lucky to still be alive as he has come close to being killed COUNTLESS times over those years. He's fought tooth and nail in his own way to survive, despite being a weakling. (Begging for his life, talking with his capturer - an Undead General who's killed thousands and get him to like him, running when he ought to, or just by being ultra careful where others are careless.)

This is obviously someone who has gone through a lot!

Then, on his journey to become stronger, he gains a spear with the soul of the greatest hero of the past half century, who was a former mercenary who waded through rivers of blood in several wars, gone through the greatest betrayal a child can go through, and fought a dragon to the death.

MC literally LIVES through all those memories, to the point he almost loses his identity.

Immediately after this trip down memory lane, he goes into battle with the Knight of War from the Four Riders Of Freaking Apocalypse, one of the most POWERFUL beings in this World, AFTER HER AWAKENING. Yes, War Knight, already super powerful, absorbed power of an effing dragon and grew even stronger... and our MC fought her toe to toe... and WON!

This are not the kind of experiences you go through, without growing, is it? Your mind would have long since toughened up after those three years long before he picked up his spear, don't you think?

Well, it would seem our dear author didn't seem to think so.

1. He caught one of the Four Most powerful Demon Generals under the Demon King masquerading as his lover, and the next time we read of him, he is knocked out unconscious with the Demoness smiling down at him. ABSOLUTELY NO SCRATCH on her, with no even Signs of battle in the alley they were. No sign of resistance. This is someone who went toe to toe with one of the generals of the Corpse Lord, in an AWAKENED FORM, and yet he wasn't able to make the Demon break a sweat? It's okay for her to defeat him, but to do so without seemingly any effort?
2. You will think after all he had been through from the corrupt Empire, he would have a healthy dose of righteous anger or at least some self respect. Right? Well he doesn't. Upon invited to the palace, he is made a complete and utter mockery of by a nobleman and all he does is stand still and take it. Author gives him the excuse of "If I make a move on him and kill him, what of my friends? They won't be safe." Bro, this is someone who saved the effing empire from legions of self replenishing Undead. Even if he couldn't attack the nobleman, he could have slapped him. There's no need to kill the fool, but apparently, MC is too foolish to realize that. What, slap is too much? Then he could have spoken up! He has a mouth! He could have said something, insulted him back, defended himself, or just plain ignore him in an obvious contemptible manner to show the noble he was looking down on him. COUNTLESS things he could have done, but no, he chose to grit his teeth in s*upid anger and take all the noble's insults cos that what he had to do.
3. Crown Prince comes in later, practically sells him off to a researcher that wants to keep him then leaves, and all the MC could feel is Fear? He couldn't speak up for himself (Again) nor did he even bother to stand up and be like, "Hey, why did you even invite me here?" It's as if he's forgotten his own strength, absolutely no self esteem nor confidence even after living through the life of a complete badass hero. All he was thinking after his FIRST TIME SEEING HIM, was "This Prince is someone who carries more responsibility than me." I Kid You Not.
4. In later chapters, in private between him and the prince, when he's supposed to be praised for a meritorious deed, he is threatened at sword point by the prince, who in terms of strength and combat, is inferior to him, and all our MC does is tremble in fear. He can't even look at the Prince's eyes.

The prince asks him, "are you my friend or my enemy" and all MC says in a weak and fearful voice is "All I want is to live like a normal human being"

At a time when he could have stood his ground, looked the prince in the eye and say "No, I'm not your enemy." Or something like "All I want is peace for me and mine." Or even a c*cky reply like "You think I have the time for that."

Literally anything, but he gives a weak, teary answer...

I'm done. I have never been so disappointed in a book. You really let me down Author. It was going so good... why?