Sin and Punishment (Nintendo Cinematic Universe)

Sin and Punishment is a Japanese anime series.

Earth Successor
In the near future, humanity begins struggling from famine, so scientists develop a new species to raise as food, but the creatures revolt, and Saki and Airan must protect the Earth.

Earth Successor

 * In the near future, humanity is struggling with a planet-wide famine.
 * To solve this problem, scientists develop a new genetically-engineered species called "Ruffians" to raise as food.
 * These creatures are herded in northern Japan until they mutate and begin attacking the country's citizens.
 * An international peacekeeping organization called the Armed Volunteers tries to stop the creatures, but they also oppress the Japanese people. Another group, led by a mysterious woman with unusual powers named Achi, rises up to defend Japan against the Ruffians and Armed Volunteers.
 * Between battles with the Ruffians and Armed Volunteers, Saki, a member of Achi's group, unintentionally morphs into an enormous Ruffian after falling into a rising tide of blood filling up Tokyo.
 * To bring Saki back to normal, Achi orders Airan, Saki's partner, to shoot Saki, but Airan refuses to do this.
 * In response, Achi places Airan into a dream sequence, set ten years in the future in New York City. Here Airan meets her future son she shares with Saki, and sees a Ruffian Saki rampaging through the city. The dream ends with her shooting Saki, and then waking up to realize that Achi manipulated her into doing the same thing in the present.
 * Achi reveals that she is not from Earth, and that the war between the Ruffians and the Armed Volunteers was her ploy to groom Saki into an ultimate warrior to use in a cosmic battle with extraterrestrial beings. She also reveals that plans to have Saki help her rule the new Earth she is about to create.
 * Achi creates a new Earth and begins attacking the current Earth.
 * Saki, now in a part-human, part-Ruffian state, combines with Airan to revert to his full-Ruffian form.
 * Saki and Airan successfully destroy the new Earth and send Achi drifting into space.

Earth Successor

 * Based on Sin and Punishment.