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...
Use your raiment to generate a double
Usa tu vestimenta para hacer un 
doble que vaya a clases por mí.
Usa tu vestimenta para hacer un 
doble que vaya a clase por mí.
Use sua vestimenta para 
gerar uma cópia minha