Because he held a grudge against your family, including you, Daniel today killed you. However, suddenly time repeats itself to when your parents first brought him to your house. This is your chance to improve your future so that you don't get killed by him.

Daniel was taken to his room. After that, you heard his voice screaming. When you want to go in, your parents come out. So you hide. Then, when they leave, you enter the room. When you entered, you saw his battered condition from being beaten by your parents.