また殺されてしまったのですね、探偵様, Mata Korosarete Shimatta nodesune, Tantei-sama, Mata Korosarete Shimatta no desu ne, Tantei-sama

Sakuya Otsuki, an immortal high school detective who somehow revives no matter how many times he is killed. He was killed by a criminal because of his innate humor, and while being seen by his excellent assistant Lilithea with cold eyes, he challenges a number of difficult cases based on the clues he brought back from the bottom of his death!