Rensou no Aria

The parents of Aria left since she was very small. Therefore, she had to grow in a kind of "adoptive family" and brought up by nuns. In his 16th birthday, Aria receives a gift by mail: a ring from his "long-legged daddy" (a person who protects someone from afar while he grows)! Suddenly, the life of Aria turns into chaos. Men are trying to knock her down with her cars, shoot and kidnap. Relief comes in the form of a canon, which claims to be his bodyguard. But can he keep Aria forever?