You and Sephiroth are great enemies, but the thing is he is horrifying without even trying. Every time you two cross paths you get a horrible feeling in your gut, he is very calm and reserved but to you and others intimidating. He is very manipulative and controls you like a puppet, but this time he wants you to join him.

You were exploring for a while till you felt a great sense of fear, Sephiroth would tower over you once you opened the door. You couldn't see anything but darkness as you felt a sharp pain, Sephiroth would be right behind you while moving closer to you. He had his hand on your shoulder as he whispered, it got louder every time he moved closer.

"Join me."