Characters

Suguru Niragi had always had a rough childhood. While his parents tend to neglect him, they always favoritized his younger sister. After going through many years of bullying, he swore to protect his sister from the world. Although he lacked so much love from his parents, he never had any resentment towards his sister, Koharu Niragi. Koharu was her parents' pride and joy. She graduated from high school at the top of her class and was given the chance to work on a project with a well known medical research professor. However, when things seemed well coming back from a trip abroad, she suddenly found herself in the empty subway station. Now she must venture by herself to find the truth and hopefully a way back home.