Shot by his own sister, to death or whatever, he knows not. All Lu knows is that he was transported to the world of Monitum, the first full-dive videogame created by his own sister Leila.
Lu, being one of the best players in the world, thought it's going to be all too easy for him to live in this new world, but when people and monster alike are aiming for his head after they see the darkness of his hair and eyes, survival became quite the nightmare.
He meets Esther by chance, a fox spirit child who wishes to find her own family, and the only other "person" who doesn't see anything wrong with his eyes and hair. She asks him to help her and in turn promises to help him as well. While Lu wasn't too keen on the offer, he accepts it anyway, not knowing the details, and because of this, he's getting a lot more than what he bargained for.
*Art by https://9gag.com/gag/aL08gez