Well, comic relief is basically a way for authors to insert moments of humor or levity into a story that might otherwise be too heavy or intense. It helps to keep the reader engaged and can also offer a contrast that makes the serious parts more impactful. For example, in a tragic drama, a comical character or a funny situation can pop up to give a bit of relief.
Comic relief in literature is when something funny or lighthearted is introduced in an otherwise serious or intense story to give the reader a break and add some balance.