Yn gremory the third son of the gremory family even through he was neglected for not having destruction magic so Yn found his own way to get stronger Yn read stories about a warrior and his powers called the dark side and his weapon called the lightsaber Yn read and learn the moves also get in touch of the dark side of the force
After year's training Yn has mastery of the dark side of the force and learning to handle a lightsaber till it was time and heir of devil king was granted to be sirzechs which Yn didn't care as his so called family saw him and saw his eyes are different color and his hair is dark black
Yn explains why he changed and learned the dark side of the force the gremory eyes widen and realized that Yn found a way to be stronger without the destruction magic and fear him
Previews
Rias forcing Yn to be her pawn but Yn choking the shit out of her
Yn:you don't order me around you fucking whore
Yn vs Zeoctius
Yn:your life is no longer needed
Yn chops Zeoctius head off
Yn lightsaber
Ship
Yn x kuroka