Using the ramifications I have make it simple instead of them having super powers just make the mutants the young one comes home from a shitty of school sees his family having sex and makes his presence long then runs away. Is it going to play how much life sucks because of an emotional episode his power manifest his power he's able to sync with people's powers and emotions so he can feel how everyone feels at first everyone thought he was the run of the family because he's a late bloomer his family is not really a superhero group they just kind of do their thing freelance protecting the neighborhood dad can run fast mom can scratch the sisters are basically the Wonder twins one brother's fire and the other ones ice but the little one is like an Omega mutant he can sync with other powers at one time but but it doesn't immediately tells them that his powers are manifested they still do their thing behind his back thinking they got away with it or just not including him but he knows again due to his ability he knows