Virtual World: Mirage

Nari is a high school girl who may not be a pro gamer in skill, but when it comes to game knowledge, she's on a professional levelshe knows the methods for pretty much every game out there. Her older brother Heun is just an ordinary high school student in daily life, but once he's in a game, his mechanical skill shines. The two siblings team up to completely conquer the virtual world known as "Mirage"! But isn't this seriously bad news? Even though it's virtual, they feel pain just like in real lifeand on top of that, it's a horror game!?