Yuri's mother is an anime original character.

She appears in episode 69 of Ashita no Joe. 

Yuri's mother owns the farm that Joe gets to stay at. She really misses her son and doesn't like boxing since her son Yasuo, went to a bigger city to pursue a boxing career. She lets Joe live on the farm until his broken leg is healed and she starts to feel like he's part of the family. One day when Joe needs some of his clothes sewn, his boxing gloves fall out of his bag and the mother gets shocked and sad and asks if Joe is a boxer. 

One day Yasuo returns to the farm to steal their money but he wears a mask so she wouldn't recognize him. Joe then tries to stop Yasuo and when he keeps punching him the mother tells Joe to stop since she recognizes that it's her son. She gives Yasuo the money but Yasuo after walking a few steps bursts into tears and runs to his mother and hugs her. 

Joe, a teenage orphan in the slums of the Doya streets, meets Danpei, a homeless, alcoholic ex-boxing coach. Danpei, seeing Joe's boxing talent, decides to train him. When Joe is sent to a terrible juvenile home for petty crimes, he meets Rikiishi who becomes his boxing rival. Danpei arrives at the home to help Joe to train in order to defeat Rikiishi. When Joe decides to seriously pursue boxing, Danpei cannot get a coaching license because of his reputation as a drunk. <br><br>
(Source: AnimeNfo)

Asou Mitsuko is a retired voice actress from Tokyo, Japan. She was active between 1950 and 1972.

Yuri no Haha