A pair of 50's shonen SF works.

• The Devil of the Earth:
  Mysterious alien invaders take control of engineer Takano's brain. Takano's mind is split between following those he loves and following the aliens.

• Age of Great Floods:
  Japan is submerged underwater due to a large chunk of the polar ice caps melting. The surviving animals and humans live on a Noah's Ark-esque ship in hope of a better future.

Volume 9 of the Osamu Tezuka Complete Works