Go is a supporting character at first but becomes a lead starting at episode 5. due to the nature of his voice for about half the series, his voice is overlapped as though two voices were speaking at once.

Go is rather quiet and expression less at first, but as the series goes on he becomes more vocal. he wishes to protect Kei above all else. Go is technically intersex, and also nonbinary. he never refers to himself by any pronouns but Saotome refers to Go as a "he", but also as his daughter.