I don't own Final Fantasy games or any of it's characters this is just my imagination on what if stories also this Lightning has long hair.
The emotionaless female soldier
Act 0
Every third class Soldier and 1st class soldier is in the simulation waiting to begin their training and Lightning has a blank look on her face while waiting to begin i mean she used to guardian of corps so this isn't new to her,they all charge forward...
One soldier clashed with Cloud while other swirls around and clashed him too Cloud pushed them away and Lightning coming from above slashed threw him Cloud did a backhand attack with his sword,Lightning still had that blank face on not showing any emotion untill Sephiroth attacks from above.
Lightning's quick enough to move forward and clash him still having that blank face on while Sephiroth's grinning because he's never seen a female soldier before,Lightning jumps back and Sephiroth goes after her as they fight.
Cloud knocks the soldiers out only for Genesis to swing at him Cloud clashed him just in time...
Lightning and Sephiroths fight takes to the cannon where their clashing each other while fighting Lightning swung one last time as Sephiroth clashed her.
Sephiroth:Hah is that the best you can do?
Lightning*Mouths damn it while getting pushed back*
The simulation shuts off...