kat's manga / #Action(2)

Book nerd gets transported to another world and runs a bookstore. Because of a demon protecting him, others see normal books as powerful relics. Hijinks ensue, but outside the bookstore there are serious things going on

MC’s skill causes him to want to kill, so he hides his strength. His insanity is kinda awesome in a cringe kinda way. Throughout, he lets others know of his talent and learns to control his killing intent (though he still looks cool doing it)