Automating tutor operations — attendance, invoicing, and class reports
Two AIs exist side by side, yet they can't talk to each other. This is the story of how I solved that problem with Gmail—a tool everyone already has.
2026-03-23 Efficiency TipsGot your diagnosis results and stopped there? What truly matters is what you do after you know your type. Here's a concrete action plan tailored to each result.
2026-03-23 Efficiency TipsTax season is over and the new semester is just around the corner. As AI automation tools spread among freelancers, here's how to eliminate your tutoring admin work for just ¥500/month.
2026-03-22 Dev StoryI was fed up with copy-paste hell when I learned about a tool called Claude Code. "It rewrites your files directly." That single phrase changed my world.
2026-03-22 ProductStill managing tutor attendance manually in Excel? With Kagemusha System, everything from lesson tracking to invoice generation is fully automated through Google Calendar integration.
2026-03-21 Efficiency TipsFrom spring intensive courses to the new school term — when your student count surges, it's time to get your systems in order before schedule management falls apart. Here's how to fully automate attendance tracking and invoicing for just ¥500/month.
2026-03-21 Case StudyIn an age where AI can teach academics, a tutor's real strength is "guidance only humans can provide." But what if admin work keeps you from focusing on what matters most? Here's how one tutor solved that problem.
2026-03-21 Efficiency TipsDo you find yourself scrambling every March? By automating the most tedious part of tax filing for tutors—organizing your records—the entire process becomes surprisingly easy.
2026-03-21 ComparisonHow much time do you spend on attendance management every month? We conducted a thorough comparison of three methods—handwritten records, Excel, and the Kagemusha System—across time, accuracy, and cost.
2026-03-21 Dev Story"If AI can write code for me, maybe I can do this too?" I was so wrong. The battle with ChatGPT was an unimaginable nightmare.
2026-03-21 Dev StoryZero programming experience. I had never written a single line of code. But six years of accumulated frustration from tutoring admin work changed everything.
2026-03-21 DevelopmentA full reveal of the PC environment behind a SaaS product built by someone with no coding experience. Part 1 introduces my partner in development — how to install and use Claude Code.
2026-03-21