This drama is a love story between Kataoka Sakuya, a grim reaper who comes to the human world for the first time, and Mochizuki Nayuki, a woman who lost her father at a young age and has devoted her life to raising her only remaining family—her younger brother. As they meet, they gradually come to understand each other, and slowly, they begin to fall in love. However, a fate that will dramatically change their lives awaits them both…
The story is set in a big hospital which is infiltrated and taken over by an armed group wearing devil masks. Musashi Saburo a police officer on leave of absence has to save the hostages within a set time limit.
Haruno Shotaro and his girlfriend Mimori Arisa get into a car accident. The next moment, when he wakes up, he finds out that he is in the hospital and has a cast on his right foot and left hand. Soon, Haruno Shotaro thinks that something is really strange with the hospital. The hospital has weird patients and the doctors and nurses seem to be hiding something. A mysterious serial murder case also takes place outside the hospital. What is the connection between the hospital and the serial murder case? What is happening in the hospital?
A popular English teacher, Mizuguchi Risako has been kidnapped three days before the high school's graduation ceremony. Four high school seniors received a mysterious challenge letter, asking them to solve the mystery of the kidnapping case within 72 hours. The four students are Kurokawa Yoshiki, his childhood friend Takahata Ayane, sports all-rounder Ogita Junpei, and school's beauty contest winner Komatsu Mio. The four students were wondering why they're the only ones who received the letter, but later gradually found out the "other face" of Mizuguchi which she has been hiding.
Excitement pervades through a university preparing for the annual school festival. Meanwhile, a calm atmosphere hangs over the club room of the film studies group which does not really have an exhibition. But Sara, who dreamed there was something in the corner of the club room, finds an old cardboard box that morning.