Shuuko Komi is Shouko's mother. She looks like Shouko, but her personality is like that of a teenager. She introduces herself to Hitohito and Najimi as forever 17 years old.

Just like her son and daughter, Shuuko is very beautiful. She is always the chatterbox in their family as her kids take after their father Masayoshi, and are very silent. Shuuko is always wondering how her family talks and understand each other.

Before she was married, her name was Shuuko Nimi. She was bored by school and had even dissed her future husband, Masayoshi Komi, until she saw Masayoshi do various things that cause her to blush out of confusion and fall in love with him.