I Killed the Demon King. It Was a Mistake

Description

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[Congratulations on seeing all the endings of the Valent Saga.]

[From now on, you can select the hidden origin ‘Demon Race’.]

I was born as a Demon after falling into the game world and a whole 3 years have passed.

The nameless Allied Forces soldier, Mil of the Sky Knight Order, Barbarian Knight Barre.

And the doppelganger and spy of the Demon King’s army, Seo-han, are all me.

But I… “Y- you, what the heck… Bam!” I ended up blowing off the Demon King’s head.

Huh? This isn’t right.

Associated Names
One entry per line
마왕을 죽였다. 실수였다.
Related Series
N/A
Recommendations
My Demons (1)
I’m a Max-Level Regressor (1)
Recommendation Lists
  1. Weak to Strong Male Harem Protagonist
  2. Male Power Fantasy with Harem

Latest Release

Date Group Release
07/19/25 ippotranslations c181
07/18/25 ippotranslations c180
07/17/25 ippotranslations c179
07/16/25 ippotranslations c178
07/12/25 ippotranslations c177
07/11/25 ippotranslations c176
07/10/25 ippotranslations c175
07/09/25 ippotranslations c174
07/05/25 ippotranslations c173
07/04/25 ippotranslations c172
07/03/25 ippotranslations c171
07/02/25 ippotranslations c170
06/28/25 ippotranslations c169
06/27/25 ippotranslations c168
06/26/25 ippotranslations c167
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Review
3 Reviews


Ironman96
Ironman96
Nov 07, 2024
Status: c29
This one's not terrible, but not great either. We have a brutish and barbaric MC who doesn't take sh*t from anyone. He brute forces his way through most of his problems but also has the ability to scheme and plan ahead. I like the MC here. Side characters are meh and only world building so far is one city but we are still pretty early in the novel to talk about this.

The biggest disappointment for me is actually MC's ability, which is pretty much mind reading (not really a spoiler,... more>> it's explained in chapter 1). Its such a boring way to progress the novel and makes you lose all tension for any possible danger besides fights.

Every side character interaction/scheme/politics is dealt through this overpowered ability and all characters lose any possible charm and mystery they could've had. Oh we're introduced to a cool alchemist, we instantly know what he wants from MC. Oh we meet a cool inquisitor lady, will she be an ally or a foe, nvm, we instantly know what type of person she is. <<less
9 Likes · Like Permalink | Report
IWantToReadStupidWebsite
IWantToReadS
Dec 04, 2024
Status: c72
It's a good read but the translation leaves a lot to be desired. There are two entirely different species/factions and they are both called demons, but will be referring to completely different things, it feels like one of them should be called devils instead or something.

... more>>
Spoiler

First is the demons lead by the demon king, which include different races like orcs/beastkin/succubi/dopplegangers/vampires.

Second is the demon who are basically humans who were transformed from magic infecting their brain making them grow from 1-9 horns, the more horns, the stronger they are, strongest demon so far has been a 4 horn, with reference to a legendary 9 horn demon, the plague demon being made as well.

[collapse]

I really hope this is addressed at some point, as obviously it can break immersion when you realize they are talking about an entirely different kind of demon from what you were thinking, it''s not so much an issue when they are referenced in different chapters/arcs but when referenced close together, like in the same chapter, it can be jarring. <<less
7 Likes · Like Permalink | Report
ChibiGiant
ChibiGiant
Mar 17, 2025
Status: c270
Hi, ChibiGiant here with another review for one of the novels I am translating.

This is just a great read for all action and harem readers.

The MC is not just an average guy that got transmigrated to another world. From Start, he is competent, ruthless and gives no F.

... more>> He also has a major boost with an ability like mind reading but enemies later on can counter that and they ain't just one dimensional villains here but ones with emotional and crazy reasons for their motives.

Major side characters have their own personal growth and after ch 100 or so, there is a ramp up on the difficulty.

With each decision a critical point for the progression, MC traverses this crazy world with his personal craziness. <<less
2 Likes · Like Permalink | Report
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