Shinsekai yori

反乱の余波とモンスターラットの真実に向き合うサキとサトル

Saki realizes that the Ogre was conditioned to suffer the death feedback from killing Monster Rats instead of humans. Kiroumaru then confronts the Ogre disguised as a human, resulting in the deaths of both, after asking Saki to promise that at least his colony will be spared from the humans' vengeful wrath. With the rebellion finally suppressed, Yakomaru, having renounced his title and once more addressing himself as Squealer, is tried and sentenced to "Eternal Hell," with his body suffering excruciating pain while being regenerated indefinitely. Satoru later reveals to Saki that upon analyzing the Monster Rats' DNA, he discovered that they were created by infusing mole rat DNA into ordinary humans to prevent them from being a threat to humans with telekinesis. Saki then pays a visit to Squealer and sure that he was already punished enough, gives him a merciful death. Ten years pass, and the now married Saki and Satoru expect their first child, both positive that by the time it grows up, the world will be a better place. (Source: Wikipedia)