Students, including Aoi Nishino, take part in class and sports activity at a prestigious high school. Aoi Nishino is a member of the school's archery club. He practices archery studiously and doesn't socialize much with the other students. His childhood friend Haruka Seno is also a member of the archery club, but she worries about Aoi Nishino. One day, thunder strikes the school grounds. After that, the ordinary lives of the students changes drastically. Many samurai descend on the school grounds. It appears that the entire school has traveled back in time to the Sengoku period. Making things worse, they realize that they are in the time right before the Battle of Okehazama takes place.

The urban legend about the blog which brings tragedy and fear. Shy and inner minded high schoolgirl Hitomi starts her blog with fake name. She writes and jokes about her school and friends, but whoever name is written on the blog encounters terrifying tragedy, even death.

After a convenience store robbery, three unidentified men hold a group of people hostage in a hospital. Inspector Ishida and Captain Tohno handle the negotiations while one of their colleagues, Lt. Ando, tries to find out why the men decided to take the hospital hostage. Through flashbacks, relevant information is revealed to the audience. When the negotiations are finished, most things seem to be fine until they lose track of the criminals. Then, the story unveils from a different perspective, its roots in feelings of love and vengeance.