The solution for anyone tired of managing tuition fees in Excel — automate tuition calculations with just a calendar

Let's be honest. Managing tuition fees in Excel is a nightmare.

As the end of the month approaches, your stomach sinks. That moment you open the spreadsheet is the most dreaded part of the entire month.

😫
Let's see, Tanaka this month… let me check the calendar… 4 sessions? Wait, there was a makeup lesson, so 5? Hold on, wasn't that day a holiday…
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3 hours later — "Oh no, the Satos' transportation fee changed last month and I forgot… I have to redo all the calculations…"

If you searched "tedious," you're already at your breaking point. That instinct is spot on.

The "7 Ordeals" of Excel Tuition Management

Ordeal 1: Manually Counting Lesson Sessions

Switching back and forth between your calendar and Excel, counting this month's sessions for each student. Five students means doing it five times.

Ordeal 2: Tracking Makeup Lessons

Every time "last week's lesson gets rescheduled to next week," you jot it down somewhere and update Excel at month-end. Lose the note and you're stuck.

Ordeal 3: Calculating Individual Hourly Rates

Every student has a different rate. Add more subjects and the rates change again. Your cell formulas descend into chaos.

Ordeal 4: Calculating Transportation Costs

Transportation costs differ by student. Round trip or one way? Students within your commuter pass zone cost nothing. Too many exceptions.

Ordeal 5: Sibling Discounts

Families with siblings get combined billing and a discount. But this month the older sibling missed one session. Does the discount rate change? Or doesn't it?

Ordeal 6: Broken Formulas

The SUM range in a row you copied from last month was off, and this month's total came up ¥10,000 short. A parent points it out and you break into a cold sweat.

Ordeal 7: The "I'll Do It Later" Pile-Up

Too busy to deal with it until the last minute. Result: you're wrestling with Excel at midnight.

How many of these hit home? If three or more, you've outgrown Excel.

Why Is Excel So "Tedious"? The Root Cause

Excel isn't the villain here. The problem is that Excel is a tool for calculating data that's been entered — not a tool for collecting data automatically.

In other words:

The effort of entering data itself is what makes it so tedious.

A World Where Your Calendar Does Everything

So what's the solution?

Eliminate the data entry entirely.

Excel Management

Check calendar → Count sessions → Enter into Excel → Verify formulas → Calculate totals → Copy to invoice
2–4 hours every month

Automatic Calendar Integration

Add lessons to Google Calendar (like you already do) → Done.
Additional work: 0 minutes

Google Calendar already contains all the information you need.

Automatically read this data, apply each student's hourly rate and transportation costs, and the tuition calculation is done. No human counting required.

Month-End for Tutors Who Ditched Excel

0 min
Month-end tallying
0
Calculation errors
Auto
PDF invoice generation

Automatic tallying on the 1st of every month. PDF invoices are generated on their own. Parents can check everything anytime via the dashboard.

"Wait, it's month-end and I have nothing to do…" — that's exactly how it should feel.

"But What About Google Sheets?"

Switching to Google Sheets doesn't eliminate the data entry. It's in the cloud, sure, but fundamentally it's the same as Excel.

What you need is a "spreadsheet that requires zero input."

Data flows in automatically from your calendar, and calculations, tallying, and invoice generation all happen on their own — that's how the Kagemusha System works. And since your data is stored in a spreadsheet within your own Google account, you can always view and edit the contents directly.

Key Point
The Kagemusha System isn't a "replacement for Excel." It's a system that eliminates the act of entering data into Excel altogether. Tuition management is completed just by adding events to your calendar — something you're already doing.

Summary

What Is the Kagemusha System?
Just add lessons to Google Calendar and everything is automated — records, tallying, PDF invoices, and lesson reports. Build trust effortlessly with a dedicated parent portal. Free for the first month, then ¥500/month.
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Still managing tutor attendance manually?

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