Aiko Maebara

Aiko Maebara (前原 藍子) is Keiichi Maebara's mother. She rarely makes direct appearances in. In the anime, her face is never fully shown.

Background
Aiko is very fond of detective novels, especially those of Agatha Christie. She once wrote a crime novel and has contributed to a crime novel contest. She graduated from a "humble women's university".

Tatarigoroshi-hen
Aiko inadvertently helps Keiichi murder Teppei Houjou by revealing the trick to the "perfect crime".