It's not just about Krystal rape guys, it's also Krystal romance, and it's also a way for Sue to express her inner-furry in a way that some people like A.R.C. won't see through the mirrors, because mirrors are a solid object in which light cannot pass through, so A.R.C. sees himself instead of Sue, and he starts worshiping the mirror, but little did he know he was actually being a tool to Sue, even though the mirror clearly stated that he was a troll and NOT a screwdriver.