Satoru Arima, a university research assistant, is looking toward a quiet future with his fiancee Machiko Tokitoki. After she touches a mysterious elongated sphere near a waterfall and begins to lose her memories, Satoru follows the mystery of the object and time itself in an effort to save her.

A poignant story of a man trying to hold fast to love against an irrational force that steals a happy life.

A boy raised in a mountain village gives up his true name, takes the courtesy name Hiren, and travels to the royal capital. He comes to serve Yukishiro, an apothecary of the Imperial Pharmacy Bureau, who works to stop poisonings by nobles and is feared as the bureau's witch for her severity.

A mystery in which a young apothecary and her attendant pursue signs of poisoning amid the schemes of the royal capital.

In a town where a mysterious phenomenon called Amazakura sends petal-like matter falling from the sky, Tsubasa Kamiyashiki knows the secret held by her childhood friend Hiyori Tamaki. A transfer student, Luka Shishibuki, also approaches the mystery, and the girls move forward while carrying their pain.

In a town where petals fall from the sky, girls with secrets grow stronger through hurt and friendship.