Yes he committed a mu*der agaisnt a regressor who can fixed anything when they die. So it is pointless to kill him right there in that timeline. Also in the first place if that character lives then the MC is the one who not only make enemies with but also it is unnecessary trouble. At that point would the author want drama in their stories with an enemy that is immortal? No. It requires careful storywriting and that is not what the author going for.

TBH, I didn't expect that the romance will start soon, I didn't even expect that it would be her TT im rooting for the witch tho *sigh*

He is granted the ability "I want to be like you" borne out of his envy to the tower, a power that allows him to copy a single skill after he dies. He is then killed by the one person who has a regression power. This sounds like a plothole (or at least an astronomically unlikely plot contrivance), but it's not. It's a setup. Unfortunately, it seems like the author put too much stake into the intelligence of the average webnovel reader and assumed they would pick up on that. However, and I'm not going to actually spoil the mystery, if you want to know, please read the novel!

it was clearly on purpose. The Sword Emperor, the only person besides the audience who experiences what Kim Gongja does, constantly calls him a crazy bastard, and his character has multiple foils such as the tower master and the constellation killer who show what kind of person Kim Gongja might have become if he hadn't met other people who improved his crazy mindset. Even the hypocrisy of Kim Gongja killing the Flame Emperor, even though it actually was written to be very reasonable to most readers, came back as a serious plot point.

His S class skill is actually useless since he'll have to die to copy a skill from his killer. The lucky bastard however was able to copy a skill that resets to past 24 hrs whenever he dies

The MC has multiple limiters. He can't infinitely get skills because there are limit in skills. It's like in the pokemon games where you need to forget a skill to learn a new one. There's also a penalty in death. It is non exist when he was still f rank but as his rank increases, the penalty also increases. OP skills doesn't mean you're OP. There are characters like sword saint who are OP with inferior skills. Their main weapon in combat is Aura and the MC sucks in that.

library

master of tower - courtesan jesus who whored herself into godhood along with beloved by all "with great power come great responsibility" tattooed on her lips

The Tower Master's arc is arguably one of the most confusing and intentionally difficult reads of the novel, partly due to how the author chose to introduce Ja Soo-jung's backstory. The author literally wrote the scenes like a puzzle - the reader was left in literal confusion as to what was happening. New concepts, characters, and places were introduced left and right, compounded by the fact that every single character spoke in metaphors and hinted at a "deeper meaning" behind their uselessly complex words. In reality, most of the arc was useless fluff. The Tower Master's philosophy inherently made no sense - she aimed to experience all suffering as a means to end all suffering - the suffering she "caused" during her experiences would lead her to be the sole reason suffering occurred. Boom, issue solved - at least, if the issue was even a valid one. While I understand the Tower Master is a foil for Gong-Ja, who aims to stop all suffering through intervention rather than observation, her methodology just makes no sense. First of all, it requires severe mental gymnastics in order to even comprehend her viewpoint, but furthermore, it's never really delved into as to why she chose not to intervene besides a few confusing remarks in passing. In fact, she even claims that Gong-Ja resembles here "in the past" - if so, why has such an all powerful being not taken any action to end the suffering she oh-so-despises? Behind the layers of meaningless words hinting at a meaning that isn't there, a few glaring plot holes emerge in many of the arcs.

The 20th floor's boss stage, Estelle, brought up the question of the extent of forgiveness. If Gong-Ja decides to forgive the Demon King of Fall Rain, the killer of thousands and the ruiner of many more, why shouldn't he forgive the Flame Emperor, who's only real crime was orders of magnitude less than Estelle? This discussion gains even more value as Gong-Ja applies this logic to the other terrors he encounters in the tower, turning this question into his literal moral philosophy - repentance through forgiveness. In the Murim arc, a short delve into the nature of "Demonic" and "Righteous" is shortly explored. Unlike many martial novels, su*cide Hunter points out the two are inherently connected as "brothers", the only difference being their views on the world - whether to make their mark on it or to treat it as it is and nothing more. Both suffer consequences when taken to extremes, but similarly, neither are inherently "evil" either. Such moral ambiguity makes the finale of the Murim arc even more meaningful, both emotionally and philosophically. In the Goblin arc, the idea of viewing divinity as a guide rather than a ruler is brought up, and both sides of the coin are explored throughout the arc (s), which was really enjoyable (and funny) to read.

Once again, the Tower Master's arc takes the spotlight. The debate between action and inaction is proposed through the "duel" between the Tower Master and Gong-Ja regarding who can make souls who have lost their way and are struggling more satisfied. However, after the chapter the duel was declared in, it is hardly brought up again, EVEN AFTER Gong-Ja conquers the 100th floor and literally becomes a pillar (for some reason). Furthermore, the nature of the Tower as two cycles of assessing growth, both as a group of people (0-49th) and as a person (50-99th), was a very interesting idea to explore, had the author not forgotten after a chapter or two. Some of the moments I thought would've been really cool if explored further were just cut short, which I found a little disappointing.

For example, the guild masters are a great example of the depth the author expects of his characters. Anastasia, or the Black Dragon Guild Master, appears at first as a cold and ruthless leader who sacrifice anything for the betterment of the tower. However, it is slowly revealed throughout her various interactions with Gong-Ja that she is just a lost girl looking for stability - a pillar she can lean on. After going so long without anyone she could trust, her vulnerability has led her to simply abandon all human relation - not trusting anymore brings less baggage. With Gong-Ja being her first true "friend" in a while, she forces him to sign a literal contract in order to be her "friend", further exposing her untrusting, yet hopeful personality. Further showing the author's clear mastery at developing good characters is the Crusader, someone who appears inherently righteous at first but is slowly revealed to be just almost to a fanatical degree. Never letting go of grudges against those she deems unjust, no matter who they meant to her. In fact, she was committed to mu*dering all of her comrades in return for their initial massacre committed at the beginning of the tower. Gong-Ja himself is a very compelling main character as well, especially at the start of the story. He is a hunter that has nothing going for him except his immense willpower and a greedy desire to achieve his own, special ending, no matter the cost. Whether it be committing su*cide over 4, 000 times or literally sentencing himself to the harshest of solitudes in order to prove a point, he will do it all to achieve his perfect ending. This willpower-driven main character who wasn't excessively overpowered and was forced to work towards his victories was extremely fun to read about.

The first glaring issue is Gong-ja himself. It feels as if he literally regresses into a shallower character. While at first he performed all these actions out of pure selfishness, he began doing it under the name of "righteousness" and the "power of friendship" down the line. Admittedly, this can be attributed to his growth through meeting his wife and becoming close with the guild masters, and by extension, his world, but the way it's pulled off is disconcerting. It is almost as if the author is desperate to a fault to prove that Gong-ja is a good person. However, this isn't the main issue. Gong-ja suddenly becomes extremely experienced with aura and significantly more intelligent seemingly out of nowhere. Plots that he would've fallen into at the current pace of his character growth are seemingly easily seen through by him. Issues that would've taken multiple regressions and some enlightenment to solve are solved in a single one, even worse, through this aforementioned "power of friendship". It's literally all a breeze for him - the regression skill removed all tension from the novel, partly due to its frequent use in the latter part of the novel. Though this was bound to happen due to just how broken this combination of skills is, it really affected the quality of the novel in the second half, not invoking nearly as much compassion and connection to Gong-ja as the first half of the novel. Furthermore, the rest of the cast that was so thoroughly developed in the first half are literally abandoned in the second, due to the nature of the "qualifications". While this can be interpreted as an attempt to shift the focus to Gong-ja to spotlight his supposed "growth", it has almost the opposite effect. I ended up missing the others quite a bit, and it annoyed me how the stage was cut off from anyone who wasn't a god. It made Gong-ja seem haughty and arrogant, especially the way he acted in the later levels. Unlike the somewhat grounded nature of the story previously (where the power scaling was somewhat bearable), Gong-ja's inhumane and unexplained growth really broke the immersion for the second half. Even worse, the main gimmick of his character, namely the trauma recreation, seems to get easier instead of harder the higher level he gets. Trauma which nearly took his life previously was supposed to be multiplied by orders of magnitude, but he literally offscreens it in the later chapters. Intentional or not, Gong-ja turns more into the power fantasy insert I expected when I first started the novel.

I'm looking at you, useless Raviel assassination arc

Up to when his tower reaches the 50th floor.