Jun is doing her best to meet the expectations of the students.  She's very popular with the students, but she's been possessed by a loose soul.  And so, Keima begins his conquest of Jun.  However, she's preoccupied with becoming the ideal teacher, so she only sees Keima as a student.  In order to break free of the teacher-student mold, Keima decides to approach Nikaido, who was Jun's senior in school...
but teachers like Miss Nagase can be even worse.
pero las profesoras como 
Nagase pueden ser peores.
pero las profesoras como 
Nagase pueden ser peores.
mas professoras como 
a Nagase-sensei são piores.