Sephiroth is a character with a long historical cause and effect, however his own presentation finds root in Psaro the Manslayer.
Psaro (DQIV) & Sephiroth (FFVII): From Hero to Horror
Yes, Jenova Looks Like Sephiroth’s Mother | FFVII Rebirth
Collages to clarify things based on the most up to date information from FFVII Rebirth and Ever Crisis.
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