...His sister. He knew she was suspicious, so he decided to try and deal with her personally. Going in, he decided to leave the time limit on it's default setting, not wanting to vore her forever, but he decided to make it so that she'll bulge out.
Hitting the confirm button, he decided to go and get her now. He minimized the Chronivac, but left it open, knowing that it's not going to be found while he vores her.
He stood up, and quickly dashed to her room, knowing she'd be in there. She was sitting on the floor, drawing as if she was more focused on something else.
He closed the door, and walked up on the tattletale that was his innocent younger sister. He picked her up, placed her on the bed and took her clothes off of her; She wasn't old enough to know why that part was weird, but she squirmed in his grasp and tried to get back to what she was doing. "Jeff, let me go!"
She was now in the perfect condition to be vored, and as he looked at his naked sister in front of him, had to decide how he'd do it.