There will be a special OVA release any day now to celebrate the occasion.
Keiichi Morisato is a good-natured, yet hapless and girlfriend-less college sophomore whose life takes a turn to the unexpected when he accidentally calls the Goddess Technical Help Line and a beautiful goddess named Belldandy materializes in his room. She tells him that her agency has received a system request from him, so she has been sent to grant him a single wish. Skeptical and thinking someone is playing a practical joke on him, he wishes that she stay with him forever, and to his surprise, his wish is granted.
Unable to live with Belldandy in his male-only dorms, Keiichi is forced to look for an alternative shelter, eventually seeking cover in an old Buddhist temple and allowed to stay there indefinetly after the young monk living there leaves on a pilgrimage to India upon being impressed by Belldandy's intrinsic goodness. Keiichi's life with Belldandy becomes even more hectic when her elder sister Urd and her younger sister Skuld also descend from heaven to live with them, leading him to a series of adventures among gods, demons and other supernatural entities as his relationship with Belldandy develops.