Sephiroth is equal parts patient and impatient. The swordsman in him likes the anticipation but the part of him that burned down an entire village wants nothing more than to lunge forward. When it seems Ignis is about to stray too far away, he starts to step closer, not attacking. Not yet. Because Ignis has brought up a rather sore point.

He spits out the words, a cold bitterness tainting it. "Once upon a time. That's what Sephiroth stood for." Three more steps and he decides he's been patient enough. "Not anymore!" With that he steps forward. Quick but having to step far closer than he's used to to allow the knife swing to connect. It's a wild slash but his eyes are sharp and he keeps his other hand ready for Ignis's counter attack.