A person dies as a teen and is sent to Hell. When they get there, the Devil tells them that theyre the seventh person to make it there, and therefore are now part of the Seven Deadly Sins. This turns out to mean that there are six other teenagers who were 'chosen' by the Devil as the scum of the Earth to represent the Seven Sins. The Devil explains that they're all teenagers because that's the most volatile time in a person's life, and let's be honest, most people make their mistakes and sins in adolescence. The main character is supposed to represent gluttony, and note that this doesn't mean just food or appetite. Gula by definition is an insatiable consumption to fill an inner void. Instead of food, they consume identity, aesthetics, and secrets, never content with just being one thing.