Ah! My Goddess: Together Forever (2011)

Keiichi finds out that the amusement park he once went to with Belldandy is about to close down. He then asks Belldandy to go there with him, to the place significant within their memories. It is a rare chance for the two to be alone together, and Belldandy is extremely pleased. However, Belldandy's expanding powers are causing the Goddess' existence to disappear from Earth. While the unsuspecting Belldandy and nervous Keiichi are enjoying themselves, Urd and Skuld are developing a counter-plan.