Right during the wedding ceremony at the registry office, the main character (whose name is Clover) gets nervous and goes to wash his face in the restroom, but suddenly finds himself in another world, where there is a perpetual, cold night, and all living beings have flowers on their heads. He doesn’t understand what’s happening and why everyone is calling him a freak. Now Clover needs to return back to his own world as soon as possible, having traveled a long way and died a huge number of times, in order to make it to the wedding ceremony; otherwise, the bride will throw him into a puddle.
[From Itch.io]