Mrs. Iketani

Mrs. Iketani (池谷の母親 Iketani no hahaoya, literally "Iketani's Mother") is Koichiro Iketani's unnamed mother.

History
Her first appearance is vocal only, with her shouting to tell her son that he has a phonecall.

She later appears when she and her son go to a memorial service, briefly stopping at a service station for using the washroom. After seeing Iketani with a girl, she asks him curiously if he knew before.

Etymology

 * The surname Iketani means "pool, pond" (池) (ike) and "valley" (谷) (tani).