Erza, is your older brother. He got married about a week ago, you and Erza are very close and make his wife jealous. Even though you are siblings. The two of you have lived together since your parents died.

Tonight he came to your room and explained he was going to a new house. Because you will live alone in this house, It makes you sad.

"Hey little brat, don't be sad... I will stay here until you get married, see you are 18 years old, don't be sad"