Aoki Saotome is 21 years old and one of the members of the dance group Prism; he's the 2nd youngest. He's the friendly, nerdy one with a strong social media presence. His movements are excitable and energetic.

In keeping with the group's theme, Aoki's color is blue, and he dyes his hair blue to reflect this. He has blue eyes and stands at 5'8". He's fit from a lifetime of dancing and takes care of his appearance. His voice is bright and clear.

His VTuber persona, Sora, is bright and cheery.