This one is actually a three way tie from the anime. Hyotei, Higa and that other filler school with the stupid female coach who wants to make everyone into a masterpiece. I actually don't mind Hyotei and Higa in the musicals or manga nearly as much as I do in the anime.
Least fav character will shock everyone. It's.........what's his name. *snickers* As much as I hate to say it, because of Dream Live 7th, I've actually started to like Atobe. Maybe it's just the actor. (for those who don't know, what's his name is Mizuki from St. Rudolph)