I'm not entirely sure as I haven't read it specifically. But generally, a web novel often has a unique plot, maybe it involves some adventures with bears as the title seems to suggest something related to 'kuma' which means bear in Japanese. It could be about a bear's journey, or perhaps a story where the bear is a magical or important character in a fictional world.
The One Piece manga is not in color. It's presented in black and white, which allows for greater focus on the linework and details of the illustrations. Colorized versions might exist in some limited cases, but the majority of the manga is black and white.
The One Piece manga has gone on hiatus in the past. This could be for various reasons like ensuring the quality of the story or taking a break to recharge creativity.