A couple was seen kissing passionately but no nudity was shown.
An unmarried couple lie in bed together, fully clothed. They talk, and after a few minutes they kiss. The camera angle pans to the door, where an "18+" sign is hanging, then fades, implying more happened. Nothing explicitly shown, only an implied scene.
Violence & Gore
Mild
The first episode shows a kid getting beaten up due to bullying, some blood. In other episodes, small injuries are seen as the story revolves around a track and field star, and the victim is shown healing throughout the series.
Profanity
Mild
In Episode 9, there is a small 15-second scene where the female lead shouts some f-words. Other than that there are no bad words.