Can a person change that instant?
Yes, in books and tales, according to them, there were some exceptional circumstances where those things happened. One possibility was when a person experienced a life-to-death situation.
It was a situation where everything seemed to have pushed that person to look at the reality they were afraid to even confront. The other possibility, the second possibility, is when that person was probably possessed and wasn't in their right mind.
Neirin fits in these two reasons.
Neirin, with her eyes red as blood, roamed in the deepest forest of the capital. The night was deep, and with the rumors and news about the emperor being wild spread throughout the capital, all of the citizens were afraid to go out.
