A number of cutscenes and ending movies have some rather disturbing implications, usually implying that somebody just got Killed Off for Real.
One of Kakurine's throws has her vanish and reappear repeatedly, confusing her opponent. Finally, she appears behind them, looks into the camera and smiles, as she playfully shoves her opponent. After seeing this a few times you realize: Kakurine wasn't smiling at the camera. She was smiling at you.