Santa Orchidea Senior High (神聖蘭高等学校 Shinseiran Kotogakko) is the main school where the characters of Corpse Party: Stronghold - Pictured Fear attend. Santa Orchidea is a high class high school; one would have to pass a test and pay a very expensive fee to even consider entering. Some of the brightest minds such as Kazuya Himura and Hitomi Nase have the chance of entering for free if a certain score is achieved in the entrance test.
The School Emblem is a coat of arms with a rose an an orchid crossing each other, their stems forming the lower part of the shield. The school's colors: pastel red, yellow and mint green can be seen in the female standard uniform in the details on the left side of the skirt; and in the male one, in the sleeves of the blazers.
- Daichi Mizuhachi (水橋 大知 Mizuhachi Daichi ) (Class 3-5)
- Hikaru Matsuzaki (松崎 ひかる Matsuzaki Hikaru ) (Class 3-5)
- Hitome Nase (名瀬ひとみ Nase Hitomi ) (Class 3-5)
- Kaori Ichiyanagi (一柳 かおり Ichiyanagi Kaori ) (Class 3-5)
- Ryouko Motomiya (本宮 遼子 Motomiya Ryōko ) (Class 3-5)
- Keiichiro Sakurai (櫻井圭一郎 Sakurai Keiichiro ) (Class 3-5)
- Kouko Kobayakawa (小早川 晃子 Kobayakawa Akiko ) (Class 3-5)
- Kazuya Himura (火村 和也 Himura Kazuya ) (Class 3-5)