Medaka

Takako Meguro's dream has always been to get married and quit her job. But one day, she finds herself working as a teacher at a night school. At first, she is unmotivated and doesn't take her work seriously. But she soon finds out that work at night school is tougher than she thought. There's a high-school dropout, a businessman, a cabaret girl, and many others—every student is either strange or extraordinary in one way or another. Half of the students are older than Takako, and she discovers that one of the students was her classmate in elementary school.