Well, actually, 'Heartstopper' is a graphic novel. It has been widely celebrated for its beautiful illustrations and engaging story that follows the lives of its characters, especially in the context of LGBTQ+ youth experiences. The format of a graphic novel allows for a unique blend of visual and written storytelling that has made 'Heartstopper' so beloved.
Mostly, Heartstopper exists in the form of a graphic novel. However, it might have some related spin-offs or adaptations in different mediums, but the core is the graphic novel format.
Love and acceptance are key themes. The story of Charlie and Nick shows how they come to accept their feelings for each other. It also touches on the theme of self - acceptance as the characters deal with their own insecurities and identities. Friendship is another big theme, like how their friends react to their relationship and are there for them in different situations.