The Strongest Paladin, Reincarnated into a Campus Singer

Marcus, the strongest paladin from another world, "The Sighing Wall", was reincarnated into a modern high school student, Makabe Shield II. All skills are lost, only defense power is left. He was dragged into the light music section by the energetic girl to be the lead singer. As soon as he opened his mouth... His voice broke. But why do people who hear it say "so relieved"? The daily routine of catching a Coke can with your face, and the extraordinary routine of purifying monsters with your singing voice. This time, he is no longer protecting the kingdom, but the girl playing bass.