Comingofage

3 clues
Theme of many films
Getting past puberty
Genre for "The Breakfast Club" or "A Catcher in the Rye
Similar answers:
Anothertrainiscoming
Arecomin
Becoming
Becomingold
Becomingtheage
Becomingtheboss
Clausiscomingtotown
Cometiscoming
Comin
Coming
Comingat
Comingclean
Comingclose
Comingdynasty
Comingfreeplate
Comingginst
Cominghome
Cominginfirst
Comingintofocus
Comingle