Even If Time Forgets Us {Muichiro Tokito KNY}

Koyomi Ubuyashiki never believed her family's bedtime stories were real.

A university student studying history and folklore, she devoted herself to uncovering the truth behind the so-called myth of the Demon Slayer Corps - legends of warriors who fought monsters in a distant, blood-stained era.

But one storm-struck night, the line between myth and memory shatters.

Koyomi awakens in a mist-covered forest of Taishō-era Japan, face-to-face with the boy history left unfinished - Muichiro Tokito, the Mist Hashira.

To her, he's a legend. A name from an uncovered story.
To him, she's a strange girl with unfamiliar clothes and trembling hands who says things no one should know.

Also on AO3 (MoriNoHime)