The protagonist, Mei Ayazuki (name can be changed),
finds herself transported from the modern
day to a strange version of Meiji-era Tokyo, where mononoke exist.

There, she meets historical figures such as Mori Ougai, Hishida Syunso,
Kawakami Otojiro, Izumi Kyoka, Fujita Goro, and Koizumi Yakumo.

As she interacts with them, she comes to realize that she is a tamayori,
a human with the power to see mononoke.

As days pass, she grows closer to one of the male leads and eventually falls in love.
After struggling with whether to return to the modern world or remain in the past,
she chooses to live in the Meiji era with the one she loves most.

As a tamayori, she is constantly plagued by mysterious incidents involving mononoke.