Complex sentence: But when she attempted to increase skin to skin contact, Okoi found that the coarse hair covering his body protected him from her technique and was mortally wounded as Nenki stiffened his hair into needles and impaled her across her entire body.
Split into simpler sentences: But when she attempted to increase skin to skin contact, she found that the coarse hair covering his body protected him from her technique. At that moment, Okoi was fatally wounded as Nenki stiffened his hair into needles and impaled her across her entire body.