As people have said, basically just farm 2-1 and run the bonus quest. Also I'd recommend getting girls to about 30 using the crappy manyu's and getting the rest of the way with the bronze ones.
As people have said, basically just farm 2-1 and run the bonus quest. Also I'd recommend getting girls to about 30 using the crappy manyu's and getting the rest of the way with the bronze ones.