Love Hina

Keitaro Urashima had promised a childhood friend he'd meet at Tokyo University, but he ranked 27th from the bottom in the National Practice Exam, making it unlikely. He planned to stay at his grandmother's hotel while preparing for university, but it had been converted into an all-girls dormitory. This unexpected turn of events led to Keitaro becoming the dorm's manager, and he found himself living with five other girls.