Review Detail of _Kaitlin_ in

I really like this book! However, I’m concerned because I follow a similar book on a platform called WEBTOON.com and this has the same cover, characters, and plot as that. The first known episode of each series is posted on a similar day too. The WEBTOON version is a comic whereas this is a novel or possible fanfic. Author is this you? Or do you at least know the person who posted the WEBTOON comic version? Please respond so that I know that this isn’t copied wrongly or that the other one isn’t copied wrongly... The link is... https://***.webtoons.com/en/challenge/my-grimreaper-bodyguard/list?title_no=332119