Cora is a popular slang term for corazón, which means "heart". It's a casual, modern abbreviation you'll frequently hear in contemporary Latin music, especially in Reggaeton and Regional Mexican genres.
In the song, Junior H gives a warning, singing, "Te puedo dejar el cora roto" (I can leave your heart broken). Using cora instead of the full word corazón gives the line a cooler, more informal feel. Learning slang like this is a perfect way to sound more like a native speaker.
Junior H leans hard into his signature corrido tumbado style in "ENTRE NOSOTROS", delivering a late-night anthem that is brutally honest about reckless flings. From the opening sip of Champán Rose (rose champagne) and a short skirt, he sets up a classic contrast: she looks sweet from across the room, but behind closed doors, she completely takes control. When he sings "Dos copas de más y pierde la pena / Se monta en mi cama, jala mis cadenas" ("A couple of extra drinks and she loses her shyness / She gets on my bed, pulls my chains"), he is giving credit to her bold side while they party under a full moon.
What makes this track stand out is that he hands her a giant warning label instead of a love letter. He drops the casual slang cora (short for corazón, meaning heart) when he tells her "Nada serio, pues soy peligroso / Te puedo dejar el cora roto" ("Nothing serious, because I'm dangerous / I can leave your heart broken"). He even admits that cops are trailing him ("me sigue la policía") while he rolls another blunt. He bluntly refuses to play the blame game if things go south: "Si te enamoras, no fue culpa mía / Vas a terminar dañada de por vida" ("If you fall in love, it wasn't my fault / You are going to end up hurt for life"). It is a selfish, fast-paced thrill ride, and he makes sure she knows the risks before the night even ends.