Apparently May 7th is "Ko(5)na(7)mon Day." Takoyaki, okonomiyaki, monjayaki, taiyaki — all flour-based foods (konamon).

And it suddenly hit me.

Isn't end-of-month admin work for tutors basically okonomiyaki?

Cabbage (totaling lesson hours), pork belly (calculating tuition), pickled ginger (reporting to parents), tempura bits (commuting expenses), eggs (PDF invoices) — they all get mashed together on the hot plate. When you try to flip them with the spatula, everything sticks and stretches out into a long mess, and in the end, it all burns.

Is Your Work "Going Okonomiyaki" Like This?
Reviewing Google Calendar to count lesson hours, calculating tuition for each student, sending LINE reports to parents, creating Excel invoices and converting them to PDF — they're all separate tasks, yet they all blend together on the end-of-month hot plate. Before you know it, the date has changed.

Turn Tutor Tuition Management from "Okonomiyaki Mess" to "Perfectly Grilled Dish"

The amazing thing about konamon is that even though everything is mixed up in a mess, it still grills into a perfect single dish in the end.

Admin work should be the same. All those scattered processes should be cleanly grilled into a single PDF invoice at the end. With zero effort mixing the batter.

0 min
End-of-month tuition calculation
0 clicks
PDF invoice creation
¥500
Monthly fee (price of one okonomiyaki)

A single okonomiyaki at a restaurant easily costs over ¥1,000. The Kagemusha system is ¥500/month, so for half the price of an okonomiyaki, your end-of-month admin work disappears. Cheaper than a pork-and-egg okonomiyaki.

Here's How the Kagemusha System "Hot Plate" Cooks It Up

① Prepare the Batter (5-minute Setup)

Log in with your Google account and grab the spreadsheet template. About as much effort as mixing flour and water.

② Add the Ingredients (Teach as Usual)

Just put your lesson schedule in Google Calendar and mark "completed" when done. The cabbage and pork belly load themselves.

③ No Flipping with the Spatula (Auto-Aggregation)

The spreadsheet automatically tallies up lesson hours and tuition. No need to flip anything manually.

④ Done Cooking (Automatic PDF Invoice Generation)

At month-end, the PDF invoice is perfectly cooked. Just attach it to an email and send — like drizzling on sauce and mayo.

Before / After (Hot Plate Tragedy vs. Perfectly Grilled Masterpiece)

Before

11 PM, end of month. Scrolling through Google Calendar to count lessons, transcribing to Excel, multiplying hourly rates per student, creating Word invoices, converting to PDF, attaching to emails, sending. Before you know it, it's 2 AM. Burnt onto the hot plate.

After

11 PM, end of month. "Oh, it's the 1st already," you realize, and check your phone — PDF invoices for every student are automatically sitting in the folder. Hit send and done. By 11:05 PM, you're cracking open a beer.

Comparison: Manual Okonomiyaki vs. Kagemusha Hot Plate

ProcessManual (Cook It Yourself)Kagemusha System (Leave It to the Hot Plate)
Lesson hour totalingManual count from calendarAuto-aggregation
Tuition calculationCalculator or ExcelAutomatic
Invoice PDF creationPDF from Word templateAuto-generated
Reports to parentsHand-typed LINE messagesAutomatic message templates
Data storage locationOn PC or scattered cloud servicesOnly inside your own Google account

Frequently Asked Questions

Is it really easier than making okonomiyaki?
Okonomiyaki has many steps: mixing flour and water, chopping cabbage, oiling the pan, cooking, flipping... With Kagemusha, after a 5-minute setup, you just enter your schedule in the calendar as usual. Overwhelmingly easier than making konamon (though it doesn't taste like anything).
Is data sent to external servers?
No. Everything stays within your own Google account (Calendar, Sheets, Drive). Student information and tuition amounts never leave. It all stays right there on your own hot plate.
Is it really ¥500/month with no extra charges?
None. For the price of 6 takoyaki (around ¥500), your entire end-of-month admin disappears. Takoyaki is gone once you eat it, but Kagemusha keeps working every single month.

Summary: Let's Flip the Hot Plate on May 7th

The lesson to take from Konamon Day is this: "When processes are mixed up in a mess, let someone else do the grilling."

Independent tutoring is fun when it comes to the actual teaching, but somehow the end-of-month admin is strangely heavy. That's because you're mixing and flipping everything yourself on the hot plate. If there's a system that takes over the hot plate for ¥500/month, there's no reason not to use it.

For an investment cheaper than a pork-and-egg okonomiyaki, if you can be drinking a beer at 11 PM on the last day of the month, that's already a perfect dish.

Try the Kagemusha System
Just a 5-minute setup with a Google account. ¥500/month. We grill up tutor tuition management, lesson reports, and invoices into a single perfect dish, just like okonomiyaki.

Still managing tutor attendance manually?

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