Yuiko Komi

Relatives: Masayoshi Komi (son), Sadayoshi Komi (son), Shuuko Komi (daughter-in-law), Ryouko Komi (daughter-in-law), Akira Komi (granddaughter), Shouko Komi (granddaughter), Shousuke Komi (grandson)

Yuiko Komi is Shouko, Akira, and Shousuke's grandmother. She's strict but gentle towards her family. When visiting, she usually challenges them to games.