A prison sentence for the version of me who always gave up.
Welcome to the “prison” designed to forcibly redesign your life.

■ Before you serve your sentence
First, visit https://criver.site/.
That page—designed as the “intro” to this app—
is your last moment of freedom before you're "incarcerated."

■ One life-changing year powered by the Japanese Diligence Method
This app is your personal “prison,” designed to optimize your body and mind
through five key elements: exercise × learning × sleep × nutrition × time.
It elevates beauty, health, knowledge, time management, and willpower—
to help you become more than your ideal self.

But this isn’t just another self-help app.
It’s a “sentence” for the unmotivated version of you.
A rehabilitation program born out of frustration and failure.

I’m a former high school teacher who worked with countless students.
As a child, I failed at everything.
That constant disappointment made me give up on trying—
and I drifted through life without purpose.

I dropped out of high school,
wasted my time until I was 24 with no goals,
then one day I decided: I want to change.

At 24, I studied fiercely to become a teacher.
At 28, I earned a Fulbright Scholarship and studied in the U.S.
At 30, I became a high school teacher.
At 42, I quit teaching and taught myself programming from scratch.
After 1,000 hours, I built this app.

This app is for people like I once was—
those who can't move without a powerful reason.

🔹 One Year of “Incarceration”
This app will lock you in as a “prisoner” for one year.
Your goal: live as a “model inmate.”
One year from now, outgrow the person you are today—
with beauty, health, habits, knowledge, and resilience as your tools.

✅ Rebuild body and mind through exercise
Strength training and cardio will transform your body and soul.
Boost your immunity, stress tolerance, and mental toughness.

✅ Open your future through learning
Using science-based techniques to retain knowledge.
Sharpen your memory and thinking, and accelerate personal growth.

✅ Stabilize performance through proper sleep
Sleep at the right time and for the right length—
maximize recovery of brain and body.
Sleep quality controls your focus, thinking, and emotions.

✅ Optimize your brain and body through nutrition
A nutrient-rich diet enhances full-body performance.
Boost clarity, concentration, and lasting energy.

✅ Master time with no waste
Identify and eliminate “hidden time sinks” in your 24 hours.
Build strong morning routines and structure your habits.

🔹 Why become a prisoner?
I dropped out of high school—
I was technically “free,” but completely powerless.
That version of me was the real prisoner.

In this app, you become a prisoner by choice—through willpower.
It’s not punishment.
It’s one year of discipline,
to train yourself and gain true freedom.

🔹 This is for you if…
✔ You need a reason to change
✔ You struggle with consistency and always give up
✔ You have goals but can’t reach them
✔ You want beauty, health, and knowledge—all of it
✔ You want to push yourself and be reborn through discipline

This app has zero shortcuts or “easy wins.”
Forget the illusion of instant success.
Real transformation only comes through steady effort—
and this “prison life” is the perfect environment for that effort.

This isn’t a shortcut.
It’s the surest path forward.

Let this one year become the turning point of your life.

※ Only one rule inside this app: Don't lie to yourself.
※ Before your sentence begins, visit https://criver.site/

C.River.Studio.Japan

Additional Information