Densetsu no Yarichin VS Teppeki no Shiriana

Hachiten High School, also known as Hatenkou, has two of the "strongest" students in the world. Mikagura Iori, a legendary playboy who has sex with different women 365 days a year, and Sena Minami, an iron-walled butt hole who always assaults back any guy who approaches him for his behind. Which is