|Also Known As|
|Residence||Gunma Prefecture (current)|
|Family|| Sanzou Sato (great grandfather)|
Chizuru Sato (great grandmother)
Toshiya Sato (father)
Miho Sato (aunt)
|Manga Debut||2nd 001. Daigo's Dream|
|Anime Debut||2nd-Ep1: Daigo's Dream|
|Voice Actor|| Yuma Uchida (Sunday CM)|
Reina Aoyama (child)
Hikaru appears as an average and smart boy with glasses, sporting dark brown hair.
Hikaru first appears as he transfers to Mifune Elementary, appearing in front of Daigo and Mutsuko being eager to meet the son of his dad's best rival.