Love Hina

Urashima Keitaro is determined to be accepted at Tokyo University (the hardest University in Japan to enter), because of a promise he made to a girl when he was young but he can't remember her name. After failing to enter the University twice, he is kicked out by his parents and have to live with his grandmother at her hotel, but it is turned to be girls boarding house. What's surprising is that Keitaro become the manager of the boarding house. The series created in 2000 and has 25 episodes. It has 2 episodes special called Christmas Special and Spring Special, and 3 OVA episodes. The series type are comedy and action, but it's strongly recommended for teens and adults to watch.