The knife of Komatsu, the prisoner of delicious food, is an ordinary kitchen knife. According to the query of relevant information: Komatsu's knife: It is said in the play that this is an ordinary kitchen knife. He carries the knife used for cooking. The knife is carefully processed by Komatsu, and the blade is as beautiful as the glow of water soaked in water. Therefore, the knife of Komatsu, the prisoner of delicious food, is an ordinary kitchen knife.