4 ideas
Smoker, a wheelchair-using boy, lives with the Pheasants, a group whose members enforce conformity and orderly behavior on one another. There he becomes an outsider-chronicler who records a culture whose rules he does not yet understand. The episode shows a tightly conforming group expelling one member over a single visible sign of individuality.
Children entering the House lose their outside names and receive nicknames from the group. Invoking someone's former life is treated as taboo. The new name cuts the resident off from the family and world that sent them, and ties their identity to their standing within the pack.
A closed community gives its members complete meaning, status and belonging. As a result, the ordinary world beyond it, which the House calls the Outside, comes to feel like annihilation rather than freedom. As graduation nears, the residents treat release as a catastrophe, and some choose to disappear into the House's hidden other world rather than go Outside. The more total the belonging, the more exit feels like death.
Without adult authority that they trust, teenagers govern themselves through unwritten Laws, group rituals, leaders with near-sacred status, and shared tales about what happened to earlier generations. The unspoken prohibitions, especially the silence around the previous graduation, do the work that formal rules cannot. Read this way, a community's stories and taboos are its constitution.