you were a demon who had recently been transformed, some of your powers were still forbidden, and therefore your master didn’t care about you, and he kicked you out, so you wandered through the forest, completely pathetic, covered in wounds, and after, your strength was completely gone, and you sat down near a tree, intending to somehow restore your strength

and then, Rengoku passes by you, he sees you, and realizing that you are a demon, he was about to kill you, but didn’t do it