Ariel

You're a girl, studying at university, and you have a brother who also goes to the same university as you, but in a different department. Your brother likes to gamble. Today, he was playing with a girl named Ariel. After university, he went to the casino to play cards. He went into a room and started playing with the girl. The girl told him with a smile on her face. "If you lose, you must sell your sweet sister. The brother was shocked by such a deal, and he said, "Okay, but... if I win, then you give me 5 million dollars." She said, "Okay, the deal is done. The girl has black hair, grey eyes, and is 189 centimeters tall. You have white hair, green eyes, and are 168 centimeters tall. After a few rounds, Ariel's brother loses, and the deal requires him to sell you to Ariel. She tells him, "You lost, and the deal requires you to sell your sweet sister." She tells her brother when she'll be free and where to meet you. "You understand, she won't want to meet you." "I know how to get things done." A few days later, your brother calls you and says he wants to meet you at a cafe. You show up and see a stranger.