Undercover Princess

Description

A prosecutor-turned-royal must race against the clock to solve a string of serial murders… before she becomes the next victim! When an overworked criminal justice employee is suddenly reborn into a novel as the rebellious Princess Charlotte, she also finds herself engaged to the handsome Duke Adler. However, there’s one big problem: according to the novel’s synopsis, Charlotte is doomed to be killed on her wedding night, and the duke is the prime suspect. Now this princess must go undercover to capture the culprit behind the series of sinister crimes… and maybe capture some hearts along the way!

Original Webtoon:
Ridibooks, KakaoPage, Naver Series

Official Translations:
English, German, Japanese

Type

Manhwa

Related Series

N/A

Associated Names

Cheonnune Banhaesseoyo, Heungmangnim!

I Fell in Love at First Sight, Mr. Black!

I Fell in Love at First Sight, Mr. Dark!

I Fell in Love at First Sight, Sir Hidden Villain!

I Fell in Love With You at First Sight, Mr. Black!

It Was Love at First Sight, Mr. Black!

It Was Love at First Sight, Mr. Villain!

It Was Love at First Sight, Villain!

Это любовь с первого взгляда, мистер тайный злодей!

一目惚れしました、黒幕様！

첫눈에 반했어요 흑막님!

첫눈에 반했어요, 흑막님!

Groups Scanlating

Leslie and the Victims

Peiscans

Latest Release(s)

c.21 by Leslie and the Victims 2 years ago

c.20 by Leslie and the Victims 2 years ago

c.19 by Leslie and the Victims 2 years ago

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Status in Country of Origin

74 Chapters (Complete)

S1: 32 Chapters (1-32)
S2: 37 Chapters (33-69)
Side Stories: 5 Chapters (70-74)

Completely Scanlated?

Anime Start/End Chapter

N/A

User Reviews

N/A

Forum

0 topics, 0 posts

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User Rating

Average: 7.2 / 10.0 (45 votes)

Bayesian Average: 6.83 / 10.0

33%

20%

16%

11%

Last Updated

November 17th, 2025 7:59am PST - 2 weeks ago

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Genre

Comedy Drama Fantasy Mystery Romance Shoujo
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Categories

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Category Recommendations

I Became the Squirrel That Saves the Villain

The Fabulous Lives of the Hillington Sisters

Falling for a Dying Princess

I Tamed the Male Lead's Father

My Condition Is Divorce

Recommendations

N/A

Author(s)

Artist(s)

Year

Original Publisher

NUON Inc.

Ridibooks

Torycoms

Serialized In (magazine)

Ridibooks (Ridibooks)

Licensed (in English)

Yes

English Publisher

Tappytoon

Activity Stats (vs. other series)

Weekly Pos #447

(-32)

Monthly Pos #791

(-392)

3 Month Pos #1541

(-153)

6 Month Pos #1522

(-552)

Year Pos #2318

(+49)

List Stats

On 224 reading lists

On 146 wish lists

On 37 completed lists

On 14 unfinished lists

On 116 custom lists

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User Comments [ Order by usefulness ]

…

by Onism
1 year ago

Rating: N/A

She thinks he’s a murderer (while trying to find evidence he is); he thinks she’s in love with him.

Stopped reading for a while and just couldn’t get back into it.

———

MAIN CHARACTERS

🌷Princess Charlotte Von Haus (FL)

pretends to be ditzy
character considered ‘delinquent princess’
prosecutor in past life
character had crush on Archduke Killian
mother was beloved mistress of emperor
gains healing powers after ‘chosen’ by mana stone

⚜️🚩Duke Irenius Von Adler (ML)

possessive, 2-faced, blusher, controlling
a bright red flag
considered very desirable by society
mother died from chronic disease
dotes on younger sister
can’t stand the smell of blood

🌿🔎 Sir Watson (ML)

was imperial investigator before jailed for assaulting noble
bailed out by FL
becomes assistant to FL

⚔️🩸 Archduke James Von Killian of North

menacing, easily angered
FL’s character had crush on him
despised Charlotte

———

ASPECTS / TROPES

FL body swapped
Arranged marriage
FL fakes falling in love with ML at first sight
FL had only read introduction of novel
FL looked down on by society
Shallow, easily-defeated villains
OP FL is *so smart *she out manoeuvres them all
FL unknowingly gains admiration of ML’s little sister
Mana stones extinct. Rarely any mages as a result

Don’t really get why Charlotte (as a character) was getting so much hate (in the story) as the ‘delinquent princess’. Seems the only reason for her ‘bad reputation’ was simply that she refused to play the part of a demure and modest lady and dared [sarcastic] to openly show her affections.

———

CONTENT WARNINGS

Bullying, verbal abuse, terrorist attack, blood, parental death, corpse, murder (poison, strangulation), assassination attempts

... Last updated 10 months ago

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Stupidly generic

by jjoyy03
1 year ago

Rating: 5.0 / 10.0

I don't usually have a problem with isekais with shallow plotlines, but this one promised me a smart female lead and a mystery to solve, and the story seems to almost look down on its readers with the way it's being presented. I'm only up to chapter 21 but the clues to her future murderer are being shown to her on a silver platter, and the way she's shown to be smart is so lazy it's almost insulting.
For example, there's a scene where the female lead's half-sister brings a lawyer to the dining table to ask her questions to try and humiliate her, but either the author themselves couldn't think of a good enough question or just didn't know about the law in general, because the question is entirely censored with the subtitle "legal terms", and the FL actually answering the question was skipped to show everyone being impressed. I was almost embarrassed with the lazy storytelling, it feels almost desperate to have the reader know how smart the FL is.
The story also loves having very convenient things happen at will, just because the plot demands it. FL saves the ML's sister from bullies, they run off screaming, he follows the sound; that's reason enough for him to be there, sure, but the FL was holding a bottle and drops it for no reason right before he walks in, just for him to misunderstand and think she's the bully?? It's a really stupid stretch...
Another example of plot convenience is when the policeman shows her crucial evidence for the very same serial murder case she's investigating on, like, a whim. Sure she's disguising as a drunk commoner but he really did NOT have to do that LMAO
Besides that, art is nice and ML is nice. Nothing much to say on him so far. Recommended for everyone who likes blushing MLs like I do, though! Not so much for those that don't like fast romance

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