This is the story of our new couples life after the graduation of Kei. They decide that life on Earth would be comprmised so they head to Mizu's home planet to further Kei's education, and to live an exciting life as possible.

It's Christmas time at Lake Kizaki, and during their marital bliss Kei and Mizuho forgot it was coming. Both of them have to rush out and find their lastminute gifts without the other knowing!