To whom does 'THe Killers' belong to Is it Nick Adams Who and what is the story really about?

"The Killers" is a short story by Ernest Hemingway that features Nick Adams as a character, but it primarily focuses on two hitmen, Max and Al, who come to kill a boxer named Ole Andreson. The story explores themes of existentialism, the inevitability of death, and the nature of violence. Nick Adams serves as a witness to the unfolding events, highlighting the indifference of the world to individual suffering. Ultimately, the narrative delves into the moral complexities of life and death, underscoring Hemingway's minimalist style.