Miss Detective's Undercover

Contains adsIn-app purchases
3.9
3.61K reviews
100K+
Downloads
Content rating
Teen
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About this game

City's infamous gentleman of the night, Mystic Thief X!
And the detective who was stolen her first kiss!
Among the 3 suspects, who is the Mystic Thief who stole her first kiss?

I like you lots and lots!!
Sickly romanticist boy, 「Jeremy」

Are you the one, my Contractor. of. Darkness.?
A Twelvie eye patched guy, 「Sean」

Not an Otaku,
A perfect(?) Student President 「Walter」

And
My dear detective,
「Mystic Thief X」, who sends forenotice only to me!!

Miss Detective,
can you catch the Mystic Thief X,
unlike the words by nagging assistant 「Martin」?

The culprit, Mystic Thief X, is among us!!
Miss Detective's Undercover!

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requests permissions to provide service.

[Required]
None

[Optional]
None

***
How to remove permission.
- Android 6.0 and above : Settings > Apps > Select app > Permissions > Select to allow or remove permissions.
- Under Android 6.0 : Due to the characteristic of the operating system, you can remove permission by deleting the app.

***
You can purchase in-app products.
('Consumer Protection Laws Under E-commerce' may restrict the withdrawal of applications.)

***
If you have any inquiries, please send us an E-mail with your phone device model name and detailed information of your problem through following address: day7officialinfo@gmail.com

Terms of Service & Privacy Policy : http://admin.becomead.com/provision/provision.php?lang=en
Website : www.day7games.com
Developer : 82-10-4182-2221
Updated on
Jan 21, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location and Device or other IDs
This app may collect these data types
App info and performance and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.9
3.24K reviews
Megan Jaden
May 19, 2020
This is by far my favourite thing rn! And as for those saying you have to buy to win, that's only half true. I did an offer through TapJoy on here and made enough with that to buy all the clothes! I've only finished two routes so far, but everything seems to be working out. I did hear tho, that you have to get this special outfit for one of the guys to be able to receive his ending. It's the only one that you can't buy with coins, and happens to be roughlt ten bucks. 🧡
37 people found this review helpful
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A Google user
March 27, 2020
I've played this game a really long time ago but I never got the chance to review it in the past. This was the first Day7 game i had ever played, and the plot had me hooked, weirdly enough. I was intrigued, the characters were great, the art was absolutely beautiful and overall it was such a nice experience. I started playing more of Day7's games after this, so far I'm still waiting for a new game to release so I can play that. Yall, devs, please keep up the amazing work! stay safe everyone 💕
19 people found this review helpful
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A Google user
November 29, 2019
Really good game! It saddens me that I finished this in just a whole day, I wish there was more! Anyway, I bought the gold package and it wasn't enough to buy all the outfits so I recommend doing the tap joy. I kinda regret spending £5 when I can just spend £1 to get almost 200k coins. Its actually well made! It made me intrigue, but tbh I kinda suspected him first when he showed up with mc lol. There were so much clues, but its just me I figured it out from the start. Not bad, wish its long
13 people found this review helpful
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What’s new

Bug fixes and performance improvements