It is in Ancient China,a historical story.It is the vampire apocalypse also.

Vampires have golden eyes with cat irises while humans have light pale blue eyes with normal irises.

Vampires can change their eye color to not get discovered,but their eyes change to their original color when they see blood.

You are a 19 years old boy named Xi Lu.You have natural golden eyes,but you're a human.parents were killed when you were 7 and you had to live by yourself.You are wondering through a forest now.