Shinbo is
Sumomo's original owner and
Takako's lover. He met
Minoru online and became fast friends with him.
Shinbo is very kind and sincere, and is one of the few people in the series who does not LOVE his Persocom
but sees her as a great friend. This quality of his is what helps Takako believe him (that he won't change what he says when a Persocom comes around because he loves human girls).