「館」シリーズ (Series) favorite_border

[DeepL Translation - needs review] Introduction to Volume 1: Seven members of the University Mystery Research Institute visit Kakunoshima, an isolated island where a strange decagonal mansion stands. The architect who built the mansion, Nakamura Seiji, was said to have burned to death in the blazing Aoyashiki six months earlier. Soon after, a series of murders strikes the students. A shocking ending, one of the greatest in the history of mystery, awaits the reader! This is a newly revised ed...