Sayonara Umihara Kawase
Sayonara Umihara Kawase
In June 2013 interview with game's designer Toshinobu Kondo published in the Action Gameside magazine, he was asked what meaning there was in the game's title "Sayonara"? He responded:

"That title is a holdover from when we were thinking this would be a final fan service item for the Umihara Kawase series. It had a nice sense of impact so we kept it even as the concept of the game changed. The title conveys a sense of being ready for the end, along with the wish to return."
Contributed by ProtoSnake