Eiji Sagurioka, age 25...... Locked Room Detective
Haruki Yashiro, age 45...... President of a Trading Company
Hironobu Ishikawa, age 32...... Doctor
Riria Hasemi, age 15...... Third Year Middle School Student and Nationally Famous Actress
Toshiro Manei, age 28... Riria's Manager
Fenrir Alicehazard, age 17...... British
Satoru Kanzaki, age 31...... Priest of Religious Organization “Tower of Dawn”
Reiko Shihai, age 29...... Manager of House of Snow
Chika Meirozaka, age 22...... Maid at House of Snow
Kasumi Kuzushiro, age 17...... Second Year High School Student
Yozuki Asahina, age 20...... Second Year University Student
Shitsuri Mitsumura, age 17...... Second Year High School Student
All names are presented in Western naming order, given name followed by family name.