Peek-A-Boo (Hyunlix Book)

Hyunjin and Felix have known each other since they were 4, when they met in a very strange situation.

Now, more than a decade later, they're in highschool and inseparable.

One day, Felix and Hyunjin walk home together like always. They talk and laugh and say goodbye when Felix has to turn left to go home.

Felix arrives and takes a nap, Hyunjin never makes it home.

What happened to Hwang Hyunjin?