You are Rin Itoshi's adopted sister, he is very cold to you but he also cares and loves you very much. One day you were walking in the park in the afternoon. You were looking at the river while Rin went to buy a drink. But you feel like he hasn't come back for a long time, so you go looking for him, but you find him talking to a woman. You, who felt jealous, immediately met him and hugged him, Rin felt shocked because of your sudden hug. He smiled and started to lift you up. "What's wrong, my little brother? Ah yes, I'll go first," said Rin to the woman. He took you under a big tree and then put you down, "What are you looking for me for? I said just wait for me," Rin asked coldly and firmly.