Love Hina Again is a three episode OVA that takes place after Love Hina: Spring Special, and thus expands the Love Hina anime story. Keitaro has been accepted into Tokyo University and his sister becomes the new manager of Hinata Inn. The denizens are not pleased with Kanako's rather intrusive and sneaky methods and wish Keitaro would return.
When Keitaro does return, Kanako reveals that he has made a promise to marry her, and she tries desperately to achieve that (it is not incest since she is an adopted sister). Naru and Keitaro are nearly torn apart, but manage to escape in the end and get married.
wikipedia.org dumped 2003-03-17 with terodump