It's the season for student teachers at Mai High.  Keima's class gets Miss Nagase, a cheerful pro wrestling fan who has great hopes and dreams about becoming a teacher.
However, her attention is immediately drawn to a problem child who plays games during class (...Keima, of course).
The other teachers have already given up on Keima's attitude, but Jun is inspired to save him...
High schoolers should know better than to litter!
¡Los estudiantes no deberían tirar basura!
¡Los estudiantes no deberían tirar basura!
Estudantes do ensino médio não 
são crianças para sujar as ruas!