K - Season 2 Episode 9 Kid's room

In the year 1945 at Dresden, Germany, Adolf and his older sister experiment a relic called the Slate that gives people magical powers. During a bombing raid, Adolf's sister is killed but he himself survives thanks to the power of the Slate. Distraught over her death, Adolf leaves Germany and brings the Slate into his airship Himmelreich. Back in the present, Reisi visits the Golden King, Daikaku Kokujōji, wanting to confirm if the immortal Adolf is really dead. Believing Adolf is faking his death, Reisi orders Scepter 4 to keep on eye on him. Meanwhile, a mysterious man calls Mikoto from Ashinaka where he mocks him and claims he killed Tatara. Angered, Mikoto breaks out of prison and overpowers Scepter 4. Reuniting with the rest of Homra, Mikoto and gang heads to Ashinaka.