Zettai JoouseiThe Absolute Queen Regnant, Zettai Joou Sei, Zettai Onna Ousei

The male lead has gynophobia due to a traumatic experience. On the recommendation of his sister, who is a nun with little brother-complex, he entered a previously all female-school that now has 9:1 female to male ratio. This is a story of that man with the Queen of the school, who has demanded he work for her as her secretary.