Sarasa Ichinokura finds a cure for her daily fatigue—along with much more than she bargained for—when she’s reincarnated into a fantasy world. Now she needs to learn to survive, a journey she’ll have to take one step at a time!

A thousand years ago, there was a feared tribe of super-powered vampires called "True Bloods" that have since disappeared—except for the youngest, Ristia. Awakened from her slumber, she has one desire: get herself a little sister to dote over!