Harry's mother is a minor character appearing in the Sun & Moon series.
Sun & Moon
Harry wanted to bake a cake for his mother's birthday, so he asked Kiawe to not be late the next day. Kiawe and Ash were a little late the next day, but Harry was still able to bake the cake on time. He presented the cake to his mother, who hugged him, and watched the battle between Kiawe and Ash with his parents.