Nicknamed "Grannie", she is the woman that raised the young Bat among other orphans. Although, she may not seem to get along with Bat, the two are very fond of each other in reality. She tries to dig out a well at her village, but isn't successful until Kenshiro arrives to break off the rock plate that's blocking the water. After Kenshirō leaves, Jackal attacks the village takes Toyo and the orphans captive. Kenshirō comes back and rescue them, but she dies from the stab wound given by Jackal. Before dying Bat finally shows his true feeling to Toyo by calling her "mother", she passed away with a smile on her face.

In the anime she tries to save one of the orphan boys running in a panic from having a dynamite stick attached by Jackal's henchmen. She successfully manages to throw it away but is affected by the explosive shockwave. Bat tearfully tells her he wanted to return when had a fortune on his hands, to which she was aware and praises him for his kindness. She soon passes away afterwards, prompting Kenshiro to avenge her.

In the movie adaptation Raoh Den Junai no Shou, she is renamed Martha (マーサ Māsa), and protects her orphans from Souther's army. However, unlike in the manga, she is not killed.

One day, a wanderer appears out of the wasteland to bring justice to the guilty and hope to the people—a warrior named Ken, a man who bears seven scars upon his chest and holds the secret of a mysterious martial art known as Hokuto Shinken, the Divine Fist of the North Star! 
 
(Source: Viz Media)

The first part of the new Hokuto no Ken pentalogy (3 Movies, 2 OVAs).

Kenshiro is the heir of the legendary martial arts known as Hokuto Shinken, which can kill a man with a single blow, by striking the pressure points in the enemy's body. Hokuto Shinken can be passed only to one successor at a time. When he was chosen as the successor, he parted ways with his brothers, Toki and Raoh. The former decided to use what he knew of the art to cure people... while the latter has chosen to use his supreme strength to install peace in the world by power. 
Kenshiro is accompanied by Lynn and Bart, and the movie's story begins when an overlord starts kidnapping children to use them as slaves for building his own pyramid... 
(Source: AniDB)

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