Today, April 18, is "Superman Day."

It's been 88 years since Superman first appeared in Action Comics #1 on April 18, 1938. He flies faster than light, deflects bullets, and leaps tall buildings in a single bound.

By the way—did you finish tallying this month's tuition? Did you manage to create invoices for every single student?

Bad News
You are not Superman. Yet private tutors are expected to handle Superman-level paperwork barehanded at the end of every single month.

The "Tutor's Month-End" Only Superman Could Handle

Ten students. Pull lesson counts from your planner. Transfer them to a spreadsheet. Multiply by hourly rate. Add transportation costs. Open the Word invoice template. Swap out the recipient name and amount for all ten students. Save as PDF. Email each parent.

~3 hours
Month-end paperwork time (for 10 students)
12 times
Month-end paperwork sessions per year
36 hours
Total annual paperwork time

36 hours a year. That's enough time to give one student nine free trial lessons. Superman would be saving the planet in between, but you can't. Because you're human.

Manual Labor vs. The Kagemusha Way

TaskManual (Human Limits)Kagemusha System
Lesson recordsTransferred from plannerAuto-pulled from Google Calendar
Tuition calculationCalculator, ten studentsAuto-aggregated in spreadsheet
Invoice creationSwap names in WordPDFs auto-generated
Data storageYour PC (backup? what backup?)Inside your own Google account
Monthly costThousands of yen in lost hourly wages500 yen

Setup Steps Even Ordinary Humans Can Handle

Connect with your Google account

Just link your Google Calendar and Spreadsheet. All data stays inside your own Google account. Nothing flies off to an external server.

Register student info and hourly rates

30 seconds per student. 5 minutes for 10. Superman could do it in 1 second, but humans get done quickly too.

Add lessons to your calendar as usual

You're already doing this, right? That becomes your lesson record. Zero extra work.

Auto-generate invoices at month-end

One button click and PDFs roll out. Three hours becomes ten seconds.

Common Concerns

500 yen a month sounds suspiciously cheap?
We don't sell your data. No ads. Everything runs inside your own Google account, so there's literally no mechanism for your information to be sent to us. The 500 yen is purely system maintenance cost.
I'm bad with computers—can I still use it?
If you can add an event to Google Calendar, you can use it. Setup takes 5 minutes. Superman would do it in 0.1 seconds, but ordinary people finish in 5 minutes.
I'm worried about personal information
No data is sent to the Kagemusha side. Storage is in your Google Drive. Google's security becomes your security.

Before & After

Before

Late at night, end of the month. Staring down a calculator. Opening the Word invoice template, swapping out ten recipient names. "Wait, how many lessons did this student have last month?" Flipping through your planner. Before you know it, it's past midnight.

After

Late at night, end of the month. Open the spreadsheet. Click a button. Ten PDFs appear. Send them to parents. Done. Use the three free hours to catch the new Superman movie.

In Summary

88 years ago on April 18, Superman was born to save the planet. The Kagemusha System was born to save your month-end. Different scales, sure—but both shoulder superhuman work on your behalf.

Stay human. Just let a superhuman handle the paperwork. For 500 yen a month.

Get Started Today
5-minute setup. Anyone with a Google account. 500 yen per month.
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