One can be happy based on graphic novels by getting immersed in their amazing stories. Graphic novels often have unique plotlines and vivid art that can transport you to different worlds, making you forget your daily troubles.
It is based on a graphic novel. However, the adaptation has taken some liberties. Scenes have been reordered, and some characters' traits have been slightly modified for better cinematic presentation.
Well, without having read 'happy the graphic novel', it could be centered around a character named Happy. Maybe it tells the story of their adventures, relationships, and how they spread joy or find it themselves in a fictional world filled with unique settings and other interesting characters.
I'm not sure specifically as I haven't read it. But generally, a graphic novel with 'happy face' in the title might be about positive experiences, happy characters, or stories that end on a cheerful note.