In "Ender's Game," the protagonist, Ender, grapples with the challenge of fitting in with his peers. He considers mimicking the behavior of other boys, particularly their ability to make jokes and share laughter. Despite his attempts to connect, he feels an inherent disconnect, as he struggles to find humor within himself. This inability to resonate with their laughter deepens his isolation.

Ender's serious demeanor is rooted in fear, which inhibits his ability to engage with others on a lighthearted level. His internal struggle highlights how fear can stifle genuine connection, leaving him feeling apart from his peers. Consequently, this struggle becomes a central theme in his journey, revealing the complexities of adolescence and the quest for identity.