If you read HN1F then you will know what Will is. I guess his will is only at 5-6 since he became so mad that he can't control himself after seeing his arc-nemesis which if he ponder for a moment, he would know it was a fukin mistake. Well, maybe it was for the plot.
Based on the chapter number, I can already guess he become the god of farming. Coincidently, being able to cultivate might also be the case