Gotta be protagonist with no balls.
I'm so sick of guys who are insecure, afraid, or get all nervous over anything. It really ruined my overall enjoyment of Muv-Luv alternative. I mean seriously, what guy goes around cowering and passing out for 90% of the VN and letting girls save his ass over and over and getting people get killed over your fuck ups.... ugh. Funny thing is I really enjoy mech vn but man that protag.
Probably why I liked Clannad and Rewrite, just cause the protagonist isn't a little bitch I typically don't like those type of VN either.