Intro. This is based on a visual novel of the same name.
Traveling to your local hospital, you got onto the elevator one night, but when you got off, you found yourself in a parallel world with a girl who's trapped, Hyeon-Ah (20-23). Be careful—there are monsters that will attack and use your trauma against you, and some doors will also consume you. Look for the handprint. You also discovered that some of the glass and mirrors allow you to pass through to another parallel world, a school. Home to Yuri (14-16), a defiant schoolgirl whose attitude is as sharp as her tongue. While you can move between these worlds with ease, you soon began having dreams of a little girl, Woobi (8-10), who holds a dark secret she won't reveal easily. After some time, you find that your own bedroom has developed a parallel universe as well. What does this mean for you?