{Seventeen} 17's 14th member

What if Seventeen became a co-ed group, would their friendship stay strong, or invaded by what we call love?
Ships: Cheolhan, Seoksoo, Junhao, Soonhoon, Verkwan, Chan x himself, Marina x alone
Marina is Joshua's older cousin, and she somehow becomes the 14th member of the all boy group Svt, she is the best female trainee in Pledis and used to be maknae of a 2nd gen group