From WILD ADAPTER to Minekura Kazuya and Others

I have always admired people who can write complex plots and profound inside stories. When I read Saiyuki, I can't help but think that this is really a plot written by Minekura himself? Isn't it relying on someone else's original work to be adapted into a comic? Until I bought "WILD ADAPTER" this time, I still kept wondering who wrote such a plot, whose brain came up with such lines, and who or who exactly depicted the world that I had always vaguely wanted to depict in my mind? Swim float ripple struggle fall indulge Intention: