One day, the world shattered. Not this world, but all worlds.
The last tree person in the world and her Mr. Seaweed finally broke through the dimensional wall and reunited on a small island (×).
The world adventure of an ordinary human being and the great devil (√).
Come to the island quickly, it's just you!
Demining:
1. The male protagonist is not human and has an extraneous plot. By the way, he is a bit green~(~￣▽￣)~
2. The heroine is not a beauty, if anything, the heroine is a human being.
3. It's not an infrastructure article.
Concept: The end of the universe is pure love!