Erythr

A girl who wakes up with no memory in a field of spider lilies in the October world. Not even knowing her name, she just has a strong feeling that she's supposed to be looking for someone, but she doesn't know who. With a cheerful but mysterious boy named Cobalt joining her, Erythr ventures to the center of her world in order to find the answers to her questions. Having a tired and sardonic personality, Erythr is the kind of woman who won't tolerate anything that annoys her. This initially includes Cobalt, but as they travel together, she might just unexpectedly develop a motherly love for him. [From official bio]