

24 minSeason 1 • Episode 12
LatestTakuya and Yuki manage to keep themselves together as they enter Lost. They find Taiyo trying to eliminate Yuki's father, Daichi. As Daichi fights back, he reveals to Yuki that he had prepared everything for her and that she must now make a choice.
One day, a city suddenly disappears. Takuya, a professional by-the-contract courier and lone wolf, meets Yuki, the only survivor from the city's extinction. The two rely on a message from Yuki's father, who was heard to be missing, and head toward the disappeared city, Lost. However, unexpected obstacles strike before the pair, with the reality especially shocking for Yuki. Before them are the feelings of those left behind, a mysterious group manipulating in the shadows, and unveiling the hidden conspiracy. Takuya and Yuki, who both were initially strangers, would deepen their bond during the journey and unravel the mystery of the Lost city.
Writing
Tight mystery pacing that actually answers questions.
Production
Atmospheric worldbuilding around empty, haunted spaces.
Acting
Takuya and Yuki's evolving dynamic carries emotional weight.
Trivia, insights & behind the scenes
Based on a multimedia project by Wright Flyer Studios, originally a mobile game — the anime compresses hours of branching narrative into linear TV.
The 'disappearing city' premise echoes real Japanese anxieties about 2011's Tōhoku disaster and urban displacement, though the show never explicitly acknowledges this subtext.