Mediator
The Mediator is a mysterious figure who appears in the anime series Humanity Has Declined. She is a pink-haired girl who wears a white dress and has a halo on her head. She is said to be a messenger from the gods, and she has the power to grant wishes.
The Mediator first appears in the episode "The Day the Gods Left." She is summoned by the main character, Yuki, to help her find her missing cat. The Mediator agrees to help, and she uses her powers to find the cat. However, she also tells Yuki that the gods have left the world, and that humanity is now on its own.
The Mediator continues to appear throughout the series, and she often helps Yuki and her friends. She is a wise and kind figure, and she always seems to know what to do. She is also a source of comfort for Yuki, who is often troubled by the state of the world.
The Mediator's true identity is never revealed, but she is clearly a powerful and important figure. She is a symbol of hope for humanity, and she represents the possibility that even in a world that is declining, there is still good to be found.