Characters are supportive of one another and largely kind, friends and family members hug and are honest with their feelings, and themes of integrity and empathy are strong. Language is mild: 'ass' appears in a text, and there's some vulgar British slang like 'knob' and 'piss off.' Teens at a party drink from plastic cups, but no one acts drunk. One character tries to forcefully kiss another a third character pulls him off and shoves him away. In one scene, a boy who was a victim of bullying when classmates found out he was gay is depicted as a lonely figure while voices and written messages on the screen taunt him. But sexual content is mild and mainly confined to kisses and hand-holding. There's lots of emphasis on liking others: who has a crush on whom, who's texting whom, etc. Since a romantic relationship is central to the plot, expect flirting, dating, and kissing. Parents need to know that Heartstopper is a romance between teen boys that's set in England and based on the webcomic and graphic novel series by Alice Oseman.