In a world where a variety of peoples live, Elves and Beastmen, even Fairies, there are those that are hated――Mixed Breeds. Acht, a girl with memories and knowledge of a past life on another world, is such a hated creature.

Avoided where she walks, unable to stay at an Inn, and no potential places of employment in her future. A life with a mountain of problems, she tries to overcome it with the knowledge from her former life, but when she does… A research loving Royal Magician, a black-hearted Prince, even a Pirate Captain; a bunch of troublesome people begin to call her a "Sage" and follow her everywhere!

A reincarnation fantasy about a pessimistic girl and her misfortunes.