Eugene, an adventuring young man, is a hopeless samurai who can’t even look people in the eyes for more than 5 seconds before collapsing. However, he’s actually a top-class “assassin” ability user!? To become his dream of being a samurai, Eugene stubbornly tries to hide his powers, but he gets noticed by a suspicious elf… “I absolutely must not be found out!” A secret-keeping adventure between an introverted samurai and a beautiful elf girl.