>>1533978It's probably because you have to pay tax when you inherit a fortune, plus people making lawsuits agains HIkari Tsushin have to research what their assets are.
They probably thought, what lawyers, detectives, attorneys, police officers or tax collecters will find every one of adoptive thai kid with obscure DNA?
Turns out Thai officers outsmarted Hikari Tsushin. Shigeta even got a Cambodian passport.