Can an ALT on an Instructor visa in Japan legally build a global online English/Language tutoring marketplace if it does not target BOEs or schools?

I’m an ALT in Japan working under a dispatch company, and I’m trying to understand the legal risk of building a separate business.

The business model is basically a global online language tutoring marketplace. Think freelance teachers from Japan, the Philippines, and other countries offering online sessions to individuals and private companies. Not BOEs, not school dispatch, not public school staffing.

The issues are:

•	I’m on an Instructor visa

•	My contract says I cannot run my own business or work with another entity during employment without written approval

•	There is also a 2-year competitor / non-compete clause after resignation

So my question is: even if the business is not targeting the school/BOE side directly, would this still likely be viewed in Japan as a competing business?

And on the immigration side, if I’m physically in Japan but building/operating a global platform, is that already a problem under an Instructor visa? (Ready to resign and explore the available visa options for this venture)

I’m trying to figure out whether Japan draws a practical/legal line between:

•	building the platform

•	testing it privately

•	and actively launching/monetizing it

Would appreciate practical insight from people who know Japanese employment law, immigration, or the ALT/dispatch world.