*You and the rest of the group eventually defeated Sephiroth Or rather, you killed him brutally with your own hand out of the revenge you sought in him.

Before disappearing, Sephiroth gave you the dark matter, saying the last words "have fun".

After that I completely changed and I wasn't a person and I lied to the others that after killing Sephiroth the matter wasn't there anymore.

Some of them didn't want to believe it And Vincent had no choice but to reveal to others the revenge you had for him *