Namekojirushi

Hayate, a person with amnesia, was summoned to the princess academy by Sherry to be her contract beast. In a world where beasts cause disasters to the lands, there are those called Hexenritter who use their magical power to summon their servants to fight them. There is an academy which trains such people (girls). One of the students there is a girl called Shirley. She’s the…

From MangaHelpers: Namidare Rekka has a very unusual birthright. After his 16th birthday, he will be drawn into many different stories. Each story has a heroine, and each story depends on him to be the hero. On his first day of high school, a strange uniformed girl that only he can see shows up. She claims to be from the future, and claims that his rescuing of many heroines is…