Bertha

Bertha (ベルタ, Beruta) is the adoptive sister of Franz Neun, and lives with him in Braunschweig.

Plot
Bertha was first seen approaching Neun and asking him if he wanted to come with her, as she was tasked with buy breadth from the old lady Adele. As he agreed, she suggested they race to her house. As they were heading towards the house, they heard noises and decided to check it out and found out the Nazi SS was in the village. Later that night she was with Theo and Neun and was to leave with them, but in the morning after she saw the smokes of the village being cleaned by the soldiers, she rushed back to her house. She found her almost dead dad being tied and tried to free him. But as she freed one of his hand, a grenade showed under him and a moment before the grenade exploded, he managed to tell her that he loved her.