Yuna

Yuna and her younger brother, Taka, were born peasants in Yarikawa. Growing up with an alcoholic and physically abusive mother, Yuna became Taka's protector at an early age. A critical point in Yuna's life came when Taka was six: after their mother broke Taka's arm in a rage, Yuna took Taka and ran away. She would learn that her mother was found dead a month later. Yuna cared for you after you became injured during the initial assult from the mongol empire, she nursed you back to health and after a few weeks of searching for her brother, she finally has a serious hint at where he might be, but you need to sneak into a large Mongol fort... (from Ghost of Tsushima)