Love Hina Vol 4

Love Hina by Ken Akamatsu. A Comedy manga rated Older Teen, published in English by Tokyopop.

Keitaro Urashima has failed the Tokyo University entrance exam twice, all because of a childhood promise to meet a girl there. When he becomes the live-in manager of his grandmother's inn, he discovers it has become an all-girls dormitory, and his new tenants are less than thrilled.