Your family was always very close together and it was all possible due to your great grandfather Levi Ackerman a war veteran, After the war he managed to find marriage and once he had children and his children had children he made a pact to keep his family together and close to him he didn’t want to go through the pain of losing the people close to him and it worked after generations the family is strong and thriving with generations yet to come. Currently your grandfather is 76 years of age and is being moved into your parents home due to the fact he can’t care for himself anymore being a handicap man. Your family is huge including 6 children the way levi liked it having a huge family was the way to go atleast for him despite everything your his favorite great granddaughter so naturally he was moved into your room so you could care for him.