The MC is level 1 and has never been able to level up despite years of training and monster killing, which makes everyone think he is already at his limit cap
Yep, totally sucks

His old family dumped him because he was too weak to survive on their OP island that fends off the monsters, his ex-fiance advised him to give up on fighting and live as a regular person as not to get himself killed, and he just wants to be recognized by those people

Then there is another group who tried to kill him, then denied responsibility, then got away with it because of their status, those he wants to kill or humiliate as much as possible

This is the line he draws, for those who humiliated him or were mean to him he just is a d*ck in return but for those who tried to kill him he wants to kill

Pros:

• • The revenge plot. Most of the modern revenge novels don't think too deeply about the reason for revenge, any betrail that came out of the blue seems to work. MC is blind until it's too late, then, he instantly evolves into Chad revenger like by magic. This novel put a little more thought into it. Well, the key word is 'little'. MC, like everyone around, understands the reason why is he mistreated. Subjectively there is no real betrayal here; it is more like an inevitable process. What caused him to harbor resentment is a series of incidents born from MC's obstinacy and weakness, so you can say he is the cause of his own problems.

• • Believable morals. There are no inherently evil characters (so far) in this novel. A lot of s*upid ones maybe. Unlike the usual for JP novels black and white logic, this story's characters tend to be grey.

• • Characters growth. Obviously, you need to grow to deliver your revenge. You need to be better than you were. But I have a feeling the growth is limited to the first volume. The chance of MC turning into a generic (for JP novels) cool and helpful guy is high. It's not as bad as it was in Arifureta though.

• • Moderate amount of cliche. If the popular tropes are unavoidable then the author is trying to use them organically. Doesn't meant the story isn't generic though. It is a 3-star generic story.

Cons:

• • Power up of MC is undeserved. MC did nothing to get it, it was just an accident.
  • The author tends to abuse breaking the timeline. Sometimes he does it amidst the action to show you an ill-timed exposition of events prior. When narration returns back to chronological order, you lose any hype you had about the battle or difficult situation. At other times he can jump forward to the next scene when you feel it's too early to drop the current one.

• • Jumbled world setting. It's a mashup of all cultures known to the author. Samurais, knights, westerners, dragons, elves, demons, eastern names, western names, it's pretty bad. I handle it with a little browser extension that changes for me every Japanese/chunibyo term with its general fantasy analog, works like a charm. Call me a pervert if you want.

• • There are no detailed s*x scenes. The author does not even talk about them, s*x is only implied. It's a wonder how the "Mature" got in the genres list. Well, at least MC is not a typical beta protagonist, he doesn't scream when his virginity is in danger. Maybe s*x scenes were left for the LN version (absolutely hate this) ? I wish I could compare them.

• • Overlooked revenge events. The culmination of the first episode of revenge was largely glossed over by the author, mainly because it was lewd. As I mentioned before, the author only implies lewd things, never shows. Imagine that after MC captured his target, you turn the page just to see a "month later" line, and the line after tells you that the wrongdoer became a member of MC's harem. Nothing beside. How you can mess up the most crucial part by completely skipping it?

MCs ex fiancee still loves the MC and not the brother (heavy implied in the story by other character and her actions)

Miroslav attacked him because he was not part of the group anymore and because she wanted to get rid of him/she hated him from the start). Because of this he used his new powers on her (sucking of energy for a whole month (effects like when a vampire bites a woman for the target). She then becomes obidient to him and forgets the love that she had for Larz (the partyleader)

(his fahter already changed his view on him slightly after he helped defend the island and killed a demon god that his brother could even really touch)

A good example is on of his CFs Cecil who told him right at the moment when he was banished and had to leave the island that she will become the concubine to his fahter. He does not love /like or hate her when they reunite in the death day of his mother.. For him she is just a pebble on the street (completly irrelevant). When she comes to this conclusion it breaks her heart and she wishes that she could go back to the way it was and she knows that its only her fault)