Hyaku-nen Roman Nemuri Hime

In 1919, Yuzuki, a village girl, was on the verge of marrying Yuichiro, the heir to the Kaguragi clan that has governed their village for many years. As an epidemic spreads, they choose to hibernate for a year by consuming "tokohana," a poisonous plant believed to halt time. When Yuzuki awakens, she discovers a drastically changed world. The volume also features a bonus chapter and two additional one-shots.