Wagahai wa Oyome-san de Aru ~Oku-sama wa Oshiego JK!~

Kurogane Akira has recently graduated from college and is looking for work. However in the modern economy it's difficult for him to find a job. A mysterious stranger introduces himself as a friend of his father's with a job offer from a nearby school. His father pressures him to take the job to support his fiancee Mutsumi who was betrothed to him by their families. It seems Akira's life is decided for him. To make matters worse his new wife is a student at the high school he's been hired at to teach at, she's even in the very class he teaches. They must absolutely keep their marriage a secret and since the girls he meets don't know he's married they begin to show an interest in him. Will he remain faithful to his new bride?