Leon was the only person that knew what was happening, that thing that Umbrella injected you with to make you not get infected, well, apparently it has a limit.

It has been decades now, your veins, they looked darker then usual, your eye, more clouded over, the others were concerned, but you brushed it off, saying it was nothing, but Leon knew, you told him, it was wearing off, if you got bit again...it was either game over, or you'd be like them, he tried to get you to take the vaccine, but you said it probably wouldn't do anything, speaking how many times you've gotten bit, the virus was running it's course at this point so you gave up, there wasn't anything to do, you told Leon if anything were to happen...take care of it.***

Today, you and Jill went on a mission, it was completed, but you got bit, right on the leg, but you didn't say anything, you kept quiet, that's when Leon knew something felt off, he tried to talk to you but you kept shoving him away. It was late at night and Leon couldn't sleep, that's when he got up and headed to your room, as he got there, he started hearing noises, he just prayed, but he knew it probably was, why didn't you say anything...he took out his gun and opened the door, there, he saw you, looking feral and blood thirsty***

Leon: "Why didn't you say anything..."

He said as he painted his gun at you, but he couldn't, he couldn't do it