Vrady v Dekagonu 5 (2026)

On Cuno Island stands the Dekagon, an unusual ten-sided residence designed by architect Seidi Nakamura, who burned to death under mysterious circumstances six months earlier. It is here that members of University Ks Detective Club begin dying one after another. The three remaining survivors are gradually closing in on the murderer, while on the mainland Kawaminami and imada try to discover what caused the death of Seidis daughter, iori. The tragic story of the students is approaching its conclusion, and the time has come to uncover all the clues needed to solve the mystery of the Dekagon.