Brazilian Chicken Up 60% in One Year. But What's Really Costing You Might Be Your Own Hourly Rate

In April 2026, shocking news broke: Saizeriya is suspending its chicken-based menu items.

The cause? Avian influenza in Brazil. Imported chicken thigh prices jumped from ¥390/kg to ¥650/kg — a roughly 60% increase in just one year. Even chicken, once the poster child of affordable protein, is no longer cheap.

Now, here's a question for you, the private tutor:

Have you ever calculated the hourly cost of manually creating invoices at the end of each month?

Counting up lesson sessions for five students, multiplying by the per-session rate, entering it all into Excel, exporting to PDF, attaching it to an email… If you're doing this every month, how many hours a year is that?

You get upset about rising chicken prices, but you don't bat an eye at your own time quietly vanishing every month. Doesn't that seem a little off?

Let's Calculate the True Cost of "Manual" Fee Management

Before: Manual Fee Management

📝 Count lesson sessions from your planner or LINE → 15 min

📊 Enter data into Excel and calculate → 10 min

📄 Create invoice PDF → 10 min

📧 Email it to parents → 5 min

🔁 Repeat for every single student…

With 5 students, that's 2 hours/month and 24 hours/year. At ¥2,000/hour, you're losing ¥48,000 a year.

After: Kagemusha System

📅 Just add lessons to Google Calendar → 0 min

📊 Auto-tallied in a spreadsheet → 0 min

📄 PDF invoices generated automatically → 0 min

📧 Send with one click → 1 min

¥500/month. Spend ¥6,000/year to reclaim ¥48,000 worth of time.

There's nothing you can do about the price of chicken. But the cost of fee management? You can bring that to zero starting today.

"But Aren't Fee Management Tools Expensive?"

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I imagine fee management systems cost several thousand yen a month… Chicken's already expensive enough — I don't want to add more fixed costs.
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Kagemusha System is just ¥500/month. That's about 1.5 servings of Saizeriya's Milan-Style Doria. Plus, all your data stays in your own Google account — zero risk of data leaking to external servers.
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Can't I just use a free tool?
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With most free tools, your data lives on someone else's server. Doesn't it feel a bit risky to hand over students' personal information like that? Kagemusha runs on Google Calendar + Sheets, so everything stays within your own Google Drive.

Automated Invoice Creation in 3 Simple Steps

① Set Up Kagemusha System (5 minutes)

Just sign in with your Google account and register your student details and per-lesson rates. No complicated configuration required. Even if you're not tech-savvy, you'll breeze through it.

② Add Lessons to Google Calendar as You Normally Would

Just create a calendar event like "Tanaka — Math." No special steps needed. What you're already doing becomes your attendance record automatically.

③ PDF Invoices Are Auto-Generated at Month-End

The system automatically calculates sessions × rate and generates a PDF invoice. All you do is send it to the parents. Manual calculation errors and "Wait, how many sessions did we have last month?" are a thing of the past.

The Impact of Automation, by the Numbers

0 min
Month-end invoice creation
¥500
Monthly fee
5 min
Initial setup
¥48K/year
Value of time reclaimed

Chicken Prices Aren't Coming Back Down. But You Can Start Reclaiming Your Time Today

Unlike chicken prices, where all you can do is wait for Brazil's avian flu to subside, automating your fee management is something you can do right now.

That sigh you let out every month-end — "Ugh, this again…" — what if you learned you could end that for just ¥500/month? Is there really any reason not to?

Even Saizeriya is adapting to change by revamping its menu. Isn't it time you gave your admin work an upgrade too?

Try the Kagemusha System
Automate lesson tracking with Google Calendar integration. Auto-tally monthly fees in a spreadsheet. Auto-generate PDF invoices. Everything stays within your Google account. ¥500/month, 5-minute setup.

👉 See the details at kagemushasystem.com

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