Keitaro Urashima (浦島 景太郎, Urashima Keitarō?) is a fictional character and the main protagonist from Ken Akamatsu's manga and anime Love Hina. He is voiced by Yuji Ueda (Japanese) and Derek Stephen Prince (English). His name is inspired by the mangaka Keitarō Arima as well as the mythological character Urashima Tarō

Source: Wikipedia