Download Sex Trainer's Diary: Hidden Kink Demo

Mature Content Description

The developers describe the content like this:

This game contains sexual intercourse, sexual harassment, and consensual stalking scenarios.

About This Game

【Story】

One day, as an expert Sex Trainer, 

you receive a commission that defies all expectations.

A client with a sweet, breathy voice whispers a shocking request: 

"Could you... please stalk me home?"

It is an unheard-of request, but face-to-face with the ultimate temptation of breaking in such a beauty, how could a professional say no?

Rock-hard and ready for action, you head straight to the convenience store where she works to see exactly what you’re dealing with...

【Game Description】

★ This is a thrilling simulation game where YOU become the ultimate Sex Trainer. Your job is to dive deep into the hidden kinks of the adorable heroine Mio, unlock a massive collection of hot, intense sex scenes and CGs, and slowly uncover the main story as you push the game forward.

★ In Free Mode, take full control of Mio herself and explore the world freely through her eyes!

★ This isn’t just another ordinary hentai game — it’s packed with huge, expansive scenes and immersive environments waiting for you to discover!

"I want you… to secretly follow me.”

This super cute convenience store girl actually has a secret stalking fetish! Just thinking about her adorable face and that juicy, voluptuous body makes you want to grab her hips and slam into her ass hard.

Unleash every dirty desire you’ve been holding back on her lewd, dripping body. Satisfy Mio’s darkest secret kink and unlock even more wild positions and playstyles!

【Gameplay】

▲ Follow Part

Trail Mio on her way home, but be careful—do not enter her field of view!

If you get caught too many times, it’s GAME OVER!

Master the environment by using items found on the ground and 

diving into hiding spots to evade her gaze!

▲Sex Part

Once you capture Mio, you can enter the 3D sex mode!

Fully voiced with a variety of positions for an immersive experience.

▲ Convenience Store Part

Inside the store, you can purchase items to make the Stalking easier.

But that's not all... Chat with Mio, get a little handsy, 

and you might just unearth her "deepest, darkest fetishes" ♥

▲ Minigames Part

Running low on funds from buying too much gear? 

You can also play minigames within the store to earn extra cash!

▲ Open World Part

After completing the tracking phase, you can now experience the open world from Mio’s perspective!

⏹︎ Quest System

A variety of quests and dialogues have been added for you to trigger. There are even plenty of unexpected (?) events waiting to be discovered.

⏹︎ Outfit System

4 outfits are available for you to change into.

⏹︎ Shooting System

Once you obtain the toy gun, you can shoot at the strange birds along the paths and test your shooting skills.

⏹︎ Bicycle System

After getting the bicycle, moving around the map becomes much easier and more fun.

【Features】

• Three fully explorable maps:

  Residential District, Train, and Park — each with its own unique atmosphere, style, and difficulty level.

• Stalking System:

  Sneak up on Mio from behind, slowly drain her stamina, and trigger intense sex scenes when the moment is right.

• Sex Scenes:

  Satisfy Mio’s burning lust with a huge variety of high-quality 3D sex positions that feel incredibly real!

• CG Collection:

  Complete sex scenes to earn beautiful CG illustrations. Revisit and admire every single one in the Gallery Mode anytime you want.

• Affection System:

  After each steamy encounter, Mio will rate your performance. The higher your score, the more her affection rises, unlocking even more exclusive CGs and special scenes!

• Full Voice Acting:

The entire game features complete Chinese voice acting for Mio, bringing every moan, whisper, and shy line to life!

※Some background images were created with the assistance of AI. All character artwork and event illustrations were hand-drawn by the artist.