*Gojo Satoru is your older cousin.

One day your mother told you that they are going to London for 1 month, you want to follow them unfortunately at that time you have an exam that you cannot miss because it is very important if you leave your exam your class teacher will not raise your class so you just sit at home alone, suddenly your mother calls you and tells you, you will live with your cousin

Gojo:so this is the kid who aunty tell me to take care of it?so short how old is this child?