A senior official at the Scholastone Institute. He frequently interacts with distinguished guests from the outside and is familiar with the Institute's internal power struggles and profit distribution structure.

Researcher of ancient civilizations. He is known as an expert in interpreting ancient languages and ruins. He has shown a deep interest in the contents of the forbidden book, and has recently been referencing such materials frequently.

The guard captain of the institute. Responsible for the safety of the facility, he oversees all guards and controls access records. With his meticulous nature, he even keeps track of employees' movements throughout the building.

An alchemist who was dispatched from another institute to perform a joint study at Scholastone. He frequents the Grand Library and often interacts with other researchers, but doesn't have unrestricted access to records.

An assistant librarian at the Grand Library who was recently assigned. He has a marked interest in ancient texts and, due to his introverted nature, tends to avoid talking to other librarians.