There’s a certain narrative voice with an unspoken aim to exonerate the speaker from wrongdoing. It occurs in novels, though it’s most common in monologues, especially those which take up the entirety of a play. At Bookforum, Lurid and Cute author Adam Thirlwell lists a number of examples, including Hunger by Knut Hamsun and Wars I Have Seen by Gertrude Stein.