How Moon Fuentez Fell in Love With the Universe

Moon's parents are from Mexico; one is very light skinned and the other very dark. The same goes for Moon and her twin sister; Moon has dark skin, hair, and eyes while Star has blond hair and blue eyes. They don't speak Spanish because her mother refused to teach them or use it in her home. Moon says she is a size 16 and identifies as fat; a big part of her journey is about accepting her body as it is. Santiago's mother was from Colombia. He doesn't have a left hand, and that's not a defining characteristic. There's a blossoming but secret same-sex relationship among the characters, and Moon mentions a female friend who has a girlfriend.

Moon tells how her mother threw knives at her, cutting her wrist, and stabbed her in the chest leaving a scar. Blood's mentioned. Afterwards her mother threatened to have Moon committed if she ever told anyone, even a doctor. Her mother is also verbally abusive to Moon and later threatens Moon with knives again. Moon's father killed himself six years before the story takes place by driving off a bridge. Star's breast gets fondled by a fan who wants a picture with her. Santiago mentions a past car crash that crushed his hand, and that his sister died from the injuries she received. Mention that conquistadors raped indigenous women. A character explains marital rape.

Moon describes the times she's had sex in the past. She doesn't mention any sensitive body parts and does mention using condoms. Sex that takes place in the story mentions passionate kissing, taking off clothes in bed, using a condom, asking for consent, doing it many times, many ways, and trying different positions. Describing one kiss mentions feeling him hard against her thigh. She sees a same-sex couple kissing and moving hands around. There's a sacrilegious joke about masturbating and a joking mention of a giant orgy. Moon mentions having a penis in her vagina and "morning wood." She has a frank conversation with her sister describing what it's like to have sex without being graphic.

"S--t," "s--tty," "d--k," "eye-f--king," "motherf--ker," "f--ked," "ass," "slut," "hell," "bitch," "crap," "Jesus" and "Jesus Christ" as exclamations, "poop," "douche canoe," "holy crap," and "bullcrap." The middle-finger gesture and a gesture imitating sexual penetration.

An adult says she took prescribed antidepressants for several years. Someone mimes smoking marijuana. Someone's described as "the Energizer Bunny on crack." Moon explains that "seeing a man about a dog" is slang for needing whiskey. A minor character smokes a cigar.