Vシリーズ (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Once a year, a murder takes place under a set rule. On June 6, 44-year-old Shizuko Odawara receives a threatening letter. Detective Horokusa takes up the request and surveils the "Aso-so" house and the residence of Sakuranaru Rokuga, but Shizuko is killed in a secret room in full view of the public. The long-awaited e-book version of the first novel in the V series, which breaks new ground for Hiroshi Mori.

(Translator: DeepL)