Ep. 11: Nine's nuclear threat triggers panic as Sphinx's plan unfolds in Tokyo.

Japan panics after Nine's declaration, prompting mass evacuation from Tokyo. Lisa reunites with a dying Twelve, while Shibazaki deduces Sphinx's atomic bomb is a high-altitude detonation intended to disable electronics via electromagnetic pulse. Police track a balloon carrying the device, realizing hundreds of passenger flights are now stranded without power. Fighter jets fail to intercept the bomb as Nine observes the countdown. Twelve confesses his isolation to Lisa before the explosion occurs, creating an aurora and plunging the city into darkness. The next day, Nine visits the Settlement to honor deceased children, including Five, where he is joined by Twelve and Lisa. Shibazaki arrives, warning that surrendering will expose Project Athena. U.S. helicopters intervene, and soldiers kill Twelve despite Nine's threat involving another bomb. Nine dies after giving Shibazaki the detonator, urging him to remember Sphinx. One year later, Project Athena is exposed, and Lisa and Shibazaki visit the graves, learning that VON means hope.
Episodes
- Ep. 7 · Nine and Twelve engage with Five's chess game while police uncover the truth behind the Sphinx video.
- Ep. 8 · Media blames Sphinx for bombing while Shibazaki investigates Athena Project origins
- Ep. 9 · Nine and Twelve retrieve hidden nuclear materials while Shibazaki learns the truth about the Athena Project.
- Ep. 10 · Nine surrenders to police while Five pursues him amid Athena Project revelations and a bomb threat.
- Ep. 11 · Nine's nuclear threat triggers panic as Sphinx's plan unfolds in Tokyo.