Detective Conan Episode 681 -

Conan reveals that the building is actually a second-story building; a mirror was used to make it seem like a four-story building. Detective Conan World

The episode centers on the first anniversary of the death of Takagi’s mentor, Wataru Date . Date was a skilled officer who died in a tragic traffic accident a year prior after dropping his notebook—a notebook that Takagi eventually inherited. The mystery is deeply rooted in Date's past, specifically his secret relationship with an English teacher, Natalie Kuruma . Detective Conan Episode 681

The resolution of this arc is iconic for fans of the "Takagi x Sato" romance: Conan reveals that the building is actually a

While the Detective Boys wait for a photoshoot at the police station, a stranger delivers a tablet to them. To their horror, it broadcasts a live feed of Detective Wataru Takagi tied up and standing on a high wooden board with a noose around his neck. The police have roughly 24 hours to find him before a bomb explodes. The mystery is deeply rooted in Date's past,

Because Takagi and Date shared the same first name (Wataru), and Natalie only referred to her boyfriend by that name to her parents, Fuemoto believed Takagi was the man who "dumped" her.