PROLOGUE
The USS Iowa is sailing off the coast of Panama after passing through the Panama Canal. The Iowa runs into a storm later that day that makes the ship sink by capsizing and resurfaces near Japan. The captain goes into a coma for three years and gets standstills as a side effect that is temporary.
Follow Kei Kusanagi as he is stuck in Japan and meets a woman named Mizuho Kazami who really is an alien unknownst to him. He marries Ms. Kazami due to a misunderstanding and his already hectic life gets turned even more upside down.