April 1st is coming, so here's a story that sounds too good to be true

April Fools' Day is right around the corner. Companies everywhere are probably cooking up their best gags right now.

But would you believe this?

"At the end of every month, invoices deliver themselves to parents. Lesson records compile themselves. And it's only $5/month."

— No way, right?

It's not a joke.

This is the real story behind the "Kagemusha System," a tool that independent private tutors actually use. Just enter your lessons into Google Calendar, and it handles everything automatically — attendance tracking, PDF invoice generation, and even sending them to parents.

It's harder to believe than any April Fools' prank.

Are you still doing parent communication in a last-minute rush at the end of the month?

👩
Teacher, how many lessons did we have this month again? Where's the invoice?
😰
S-sorry... I'll send it by the end of the week... (I need to scroll back through my calendar and count...)

Sound familiar?

For independent private tutors, parent communication and invoice creation are tasks that quietly eat up your time. Taking notes after every lesson, tallying everything in Excel at the end of the month, creating PDFs, sending emails...

With cherry blossoms in full bloom this time of year, some tutors are probably sacrificing their chance to enjoy them just to catch up on paperwork.

"Manual invoicing" vs. "Automated invoicing"

Item Manual Kagemusha System
Lesson records Handwritten in planners/notes Just enter them in Google Calendar
Month-end tallying Calculate one by one in Excel Auto-tallied in Google Sheets
Invoice creation Copy-paste and edit a template Auto-generated PDF
Sending to parents Manually type each email Sent automatically
Risk of errors Calculation mistakes & forgotten sends Virtually zero
Monthly cost $0 (but factor in your hourly rate...) $5

Manual work only looks "free" because you're treating your own time as worthless. If you're spending 2–3 hours on month-end paperwork, you're losing thousands of yen (tens of dollars) in equivalent hourly wages.

If you can reclaim that time for $5, that's a deal that sounds almost too good to be true — like an April Fools' joke.

Automation with the Kagemusha System in 3 simple steps

① Register lessons in Google Calendar

It's the same as your normal schedule management. Just enter the student name, subject, and time. No special app installation required.

② Auto-tally & PDF invoice generation at month-end

Google Sheets automatically calculates lesson counts and total amounts. PDF invoices are generated with a single click.

③ Invoices sent to parents automatically

On your scheduled date, invoices are automatically emailed to parents. You'll never hear "Where's the invoice?" again.

Setup takes 5 minutes. And since everything runs entirely within your own Google account, there's no worry about student personal data being sent to external servers.

"Really just $5/month?" — Answering common questions

Is it really just $5/month? Any hidden fees?
It's a flat $5/month. No extra charges even as your student count grows. This is not an April Fools' joke.
Can I use it even if I'm not tech-savvy?
If you can add events to Google Calendar, you're good to go. Even if "What's a spreadsheet?" is your starting point, there's a setup guide to walk you through it.
Is my data secure?
The Kagemusha System doesn't use external servers. Everything is processed within your own Google account, so only you control your data.
How is it different from other tools?
Major management platforms typically cost $30–$300/month. And many users say they're "too feature-heavy to actually use." Kagemusha focuses only on what independent tutors need — that's why it's affordable and simple.

The Kagemusha System by the numbers

0 min
Month-end invoicing work
5 min
Initial setup
$5
Monthly fee
0
Forgotten invoices

This April Fools', go ahead and tell a little "lie"

On April 1st, try saying this to your students' parents:

"Starting next month, invoices will arrive automatically."

...Then actually make it happen.

There's an old saying about lies becoming truth, but with the Kagemusha System, it's the truth from the very start. For $5/month, you can eliminate the hassle of parent communication entirely. Why not use the time you save to go enjoy the last of the cherry blossoms?

Try the Kagemusha System
For $5/month, get lesson tracking, attendance tallying, PDF invoice generation, and automatic delivery to parents — all in one. Setup takes 5 minutes, and all you need is a Google account.

→ Visit the Kagemusha System official website

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