I don't know Japanese law. From what I understand, Bitcoin is completely unregulated and they have a 'hands off' approach. I'm not sure it would be illegal. In the U.S, sure. Please correct me on this.

And even if the leak itself was truly an accident, this might still be his best last gasp attempt. Perhaps the document was real, accidentally leaked, but he is trying to partner up with someone somehow. He will find no takers in the reputable BTC community.

It looks to be a third-party consulting/private equity preliminary evaluation using insider information and written with them, obviously. Stating it "certainly deserves to [go bankrupt] as a company" is the kind of contrition that people want to hear, of course.