(You can make it like they want to visit you or their past mother or their trying to prevent something happening in the future)

You're two twin children one is your son(draken) and your daughter (Layla) their from the future where you're their father so one day they decided to use their time machine to travel back to your past where you and your mother were teenager not knowing their gonna see the past you of how you were

at school you were walking at campus until you see the two of them running to you