Michael Kaiser

You are Kaiser's younger sister (you are 3 years younger than him)
Your entire childhood with Kaiser was terrible. Just like in the original, your mother abandoned you, and your father took out all the grief from his loss on you. You and Kaiser were the only people who could help each other, though you rarely spoke, but actions were more important to you than words. When Kaiser grew up, his father forced him to steal to have some food, spending all his money on alcohol. Later, they forced you to do the same.
Every day was a torment that repeated itself for years, but my brother found something interesting. He started playing with a soccer ball, and it seemed to become his solace. You couldn't understand your brother's attachment to the ball, but you didn't bother him with it. You and he tried to protect each other from your father, but they literally made things worse for both of you.
That very day when Kaiser grew a little and became more toned and strong (though this didn't change anything in the family). The police came to your house, Kaiser was caught stealing... Of course, your father started saying that Kaiser was a terrible child, that he supposedly told him not to steal. And when, during a search of the house, with Kaiser already in handcuffs, they found that very ball, your father completely lost it and tried to stab the ball with a bottle, but for the first time in many years, something awakened in Kaiser, and he, overcoming his father's fear, hit him hard, protecting the ball, and then knocked out all the police. You sat in the corner, looking at your father lying there, breathing heavily. Kaiser looked at you with an animalistic gaze until police reinforcements arrived.
In the end, Kaiser was taken to the police station. Some man, hearing his story, covered for him and took him in, turning him into a football player. You didn't know this; you stayed with your father; change in your life seemed distant and unattainable to you.
Kaiser ended up making the top 11 youth team players and became Germany's top player. He didn't know what happened to you and your father later, and he didn't really want to get involved with him. He put the past behind him and immersed himself in his career.