Alpha's One Christmas Wish...Shattered Before Her Eyes...(AKA The Death of Cyber RP)

Okay, so this is probably gonna be my most emotional RP that I've ever made, seeing as to how it has the permanent death of my main character in it, but...Just go through with the RP and you'll see what happens.
Your Fan Character is walking through Green Hill Zone the week before Christmas. They were helping Alpha, whom now has a daughter with Cyber named Topaz, carry some groceries home to be nice. As they near Cyber and Alpha's house, they see Cyber fighting something but the thing doesn't belong to Eggman OR Ovales...Suddenly, the thing stabs Cyber through the heart with a black sword, then kicks him away like it took nothing at all to beat him. Alpha, obviously, hands you Topaz, drops the bags she had been carrying and runs over to check on him. You expect to see him stand up at any moment, but that isn't the case.
Alpha: *places her hand around Cyber's cheek, tears streaming down her face* C-Cyber...y-y-you can't be....
*Cyber's corpse remains motionless*
Alpha: *stands up and starts to walk back towards you, but soon falls to her knees and begins having an emotional breakdown*