The classical definition of comedy implies that this type of narration involves a sympathetic character who achieves a happy ending. In the Shakespearean sense, a comedy almost always concludes in marriage. While Franz Kafka’s The Metamorphosis is not usually seen as a comedy, it does have comedic elements. Kafka was both delicate and ironic with his humor. Like Gregor turning into a giant cockroach. The ironic and dark humor of this situation is not missing on the reader. Here the family's precious son turns into an ordinary pest, literally and figuratively speaking. So, the answer to your question might be “The story contains elements, like Gregor scurrying around the furniture that are funny”