An ordinary high school student by day, an assassin living in the underworld by the night. Aragi Kai is a boy with two faces. His classmates dislike him because of his anti-social behavior and weird aura. One day, Aragi and his classmates were suddenly transferred to another world. It is a world of sword and sorcery. A woman who calls herself Leonora appears before the confused students, and declares…

“You are ‘Hero Candidates’ summoned here to defeat the Demon Lord. Please help us.”

Leonora grants each of the students a unique "Blessing." While some were given powerful blessings like telekinesis and destructive blast, Aragi’s blessing is "Appraisal." It is a skill that allows one to know the details of an object, but his classmates ridicule it as a skill that is useless in battle. However, Aragi's ability as an assassin and his calm assessment of situations allow him to play a dark role in this new world...

(Source: Hyke Comic, translated)