Credit Cage: the Only Special Enrollment

The credit system is the core mechanism for all operations of Star Dome High School. It is created and maintained by the principal (codename "Nihil"). This system quantifies students' behaviors, values, and survival desires into data that can be accurately calculated. On the surface, it is a "merit-based" educational evaluation system, but in fact it is a set of precisely designed survival game rules. "Credit is always just... A ticket. A ticket to my stage." - Principal