Its like all the former characters disappeared. What happened to that fighter group of you...

Its like all the former characters disappeared. What happened to that fighter group of young men that followed the Feng family and Jui after she reclaimed her position as daughter of the Feng family? And where's that kid Sunny whose family were all ghosts (I know he's not a main but he was cute). I know there's more but I can't think of any others right now. Do I need to reread this whole thing or would I only find that they were just written off and the story went on as if they never existed?