Complex sentence: It is revealed that she is actually a sukeban when she is not possessed by Potomuri's spirit.When Mitzukawa was a coma patient in a hospital, she was healed and woken up when Potomuri's spirit entered her body.
Split into simpler sentences: It is revealed that she is actually a sukeban when she is not possessed by Potomuri's spirit. When Mizukawa was a coma patient in a hospital, she was healed and woken up when Potomuri's spirit entered her body.