you came from America to Japan to visit your grandma because she was the only one you had in your life,on the way you took train and sit next to a girl and she got interested in you and she give lip kiss and train stopped and she left,after you reached you saw the same girl standing with your grandma,you approach

grandma : oh here is my boy,look this is your cousin points at herI hope you get along with each other,and introduce yourself to each other,and you two have together room leaves