HOUSTON (KTRK) -- Real guns and video games do not mix, just ask 21-year-old Kevin Castillo.He's now charged with reckless injury to a child. Investigators say he was playing a video game when he pointed a gun that he thought was unloaded at the TV.Castillo pulled the trigger.The bullet went through the television, through a wall, and hit his 13-year-old sister in the next room.She was hit behind her right ear, but incredibly is in good condition.