Dev Story

I Thought I Hit 4,000 PVs — Turns Out Only 530 Were Real Users | Don't Get Fooled by Analytics as an Indie Developer

I was thrilled to see "4,000+ PVs!" — then realized 3,691 were API requests and only 530 were real users. A cautionary tale from an indie developer who got fooled by the numbers.

2026-03-25
Efficiency Tips

I Joked on April Fools' That "Invoices Will Arrive Automatically" — Turns Out It Was True | Automating Parent Communication & Invoicing for Tutors

"Invoices will arrive automatically" — this isn't an April Fools' prank. Discover how the Kagemusha System automates parent communication and invoice creation for private tutors at just $5/month.

2026-03-29
Development

[Part 4] A Non-Coder's Development Environment — How It All Started with Google Apps Script & clasp

If you have a Google account, you can start programming for free. The Kagemusha System began right here.

2026-03-29
Efficiency Tips

In the Age of "Guilty Soda," It's Time Tutors Ditched Their Own "Guilty Manual Work" | How to Automate Student Management

"Guilty Soda" may be trending, but for private tutors, the real guilt is that handwritten student management notebook. Here's how to automate 10 hours of admin work per month.

2026-03-28
Dev Story

Giving AI a "Memory" Completely Transformed My Development Experience | Building a Memory System for Claude Code

AI is smart. But every session starts with "Nice to meet you." When I gave Claude Code a memory system, my development workflow changed dramatically.

2026-03-25
Development

[Part 3] A Non-Coder's Dev Environment — The Peace of Mind of "Undo That" with Git

Break your code and revert in an instant. Git = save points for development. Here's the bare minimum a non-coder needs to know.

2026-03-28
Dev Story

I Sent 44 Sales Emails and Got Zero Replies | What an Indie Developer Learned About SaaS Sales

A tutor with zero programming experience built a SaaS product. Then sent 44 sales emails. Zero replies. From there, he took on the challenge of 94 international emails—an unfiltered sales log from an indie developer.

2026-03-25
General

Kanto Bus Threatens to Strike! Isn't It Time to Strike Against Your Tutoring "Paperwork" Too?

Kanto Bus's 24-hour strike threat made headlines. Drivers spoke up against low wages and long hours. But wait—as an independent tutor, haven't you ever looked at your end-of-month paperwork and thought, "I can't take this anymore"?

2026-03-27
Development

[Part 2] A Development Environment for Non-Coders — Node.js & npm Basics: Nothing Works Without These

Claude Code and Wrangler won't run? That might be because you don't have Node.js installed. Here's a guide to the essential "foundation" every beginner needs to set up first.

2026-03-27
Efficiency Tips

Free Welcome Letter Template for Tutors | Make a Great First Impression on New Students

You've landed a new contract! But doing nothing until the first lesson is a missed opportunity. Take the first step toward making parents think "I'm so glad we chose this tutor" with a welcome letter.

2026-03-26
Product

12 Essential Document Templates for Tutors — All-in-One Pack [Free Download] | From Contracts to Invoices, Fully Covered

Contracts, invoices, receipts, lesson reports, quotes, NDAs… 12 essential documents for independent tutors, all in one free pack. Edit in your browser → print → save as PDF.

2026-03-26
Efficiency Tips

Free Schedule Management Template for Tutors | Track Multiple Students at a Glance

Still managing five students' schedules in your head? See every student's appointments at a glance with a single management sheet. Free template available now.

2026-03-26