Has anyone recently launched a new startup in Japan under Investor/Manager visa? I've never seen so much conflicting information regarding what's necessary. I

Has anyone recently launched a new startup in Japan under Investor/Manager visa? I've never seen so much conflicting information regarding what's necessary. I'm in the super early stages of rolling out an Asia office and would massively prefer to be in Tokyo but the hassle level feels like 10x HK/Sing. =\