Rina Hidaka as Ai Hinatsuru, a 3rd grade student who attaches herself to Yaichi as his apprentice.
Shogi meets moe in Ryuoh no Oshigoto!, upcoming TV anime based on the series of light novels written by Shirow Shiratori and illustrated by Shirabi about a high school student shogi master and the 3rd grade elementary school student who seeks to serve as his student.
Yurika Kubo as Mio Mizukoshi, a lively and sporty 3rd grade student who is friends with Ai Hinatsuru.