Modern Day Hero

a boy named 'hyunsung', who was denying reality while suffering from school violence, gets into a traffic accident while saving a child on his way home and is summoned to another world. summoned to the other world he had longed for, his excitement is short-lived as he is immediately sentenced to execution without understanding why.unjustly killed, hyunsung does not die but returns to reality, waking up in a hospital. just when he thought he had returned to his normal life, unidentified monsters begin indiscriminately killing people in front of hyunsung. an otherworlder, possessing the body of a bully, claims to be a hero. before hyunsung can fully grasp the situation, he finds himself needing to save the world. can hyunsung defeat the demon king and restore the original world?