While researching a story on a school for problem children, Nakahara meets Emi, a college volunteer with a compelling tale of her own. After overcoming her initial reluctance to open up to the writer, Emi talks about her busted leg and her childhood friendship with the chronically ill Yuka.

When Lord Murashige rises up against the tyrannical Oda, he finds himself besieged within the walls of his own castle. Isolated, he is confronted with a series of mysterious crimes that shatter the fragile order of his court, plunging the fortress into fear and suspicion. With Oda's army closing in and a traitor hiding among his ranks, Murashige is forced into an uneasy alliance with Kanbei, a brilliant and dangerous strategist held prisoner in the dungeon, as he must outwit his enemies and uncover the truth before time runs out.

After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth.

A thug offers to pay a law student's gambling debt if the student will accompany him on a trip across Tokyo.