Principal Ooishi is the principal of St. Hermelin High School. In Revelations: Persona, she is known as Dr. Kotter.
Megami Ibunroku Persona
Principal Ooishi is the principal of St. Hermelin High School. In contrast to vice-principal Takashi Hanya, she is beloved by the student body. She loves flowers and prays daily at the Narurato Stone so that the students can grow up into fine adults. She has been the principal for many years, ever since Saeko Takami was still a student.
Her counterpart in Maki Sonomura's Mikage-cho acts exactly like the original. It's revealed in the Snow Queen Quest that she was the one who ordered the sealing of the Snow Queen Mask after the death of Tomomi Fujimori.
- The surname Ooishi means "big, great" (大) (o) and "stone, volume measure" (石) (ishi).