Watashi (Humanity Has Declined)

Watashi is the main protagonist from the Humanity Has Declined anime and light novels.

While her true name is unknown, she is generally referred to as Watashi or Okashi-chan, which translates roughly to Ms. Sweets.

A sensible mediator between humankind and the fairies. She is one of the few humans left capable of creating sweets, which causes the fairies to naturally flock to her. Having observed the slow decline of humanity, her outlook on life is grim.

Appearance
She is a young woman in her late teens or early 20s. She has green eyes and long, pink hair.

Personality
She is responsible for maintaining the good relationship between fairies and humans. Because of the nature of fairies, she appears generally upbeat and friendly, providing them with sweets and playing with them. However, she too can be flustered by the eccentric nature of fairies and she is sometimes caught off guard when a job turns into yet another adventure.

At other times she will show her cynical side. In The Fairy's Secret Factory, after allowing a chicken to escape, she intimidates the villagers present into keeping this information to themselves while an internal monologue explains the key points of manipulating people. She also carries a knife during her work.

The Mediator also shows signs of being lazy and workshy, though it's difficult to determine how much of this is a farce. She claims to have chosen the job of mediating between fairies because it's easy to do and she simply chose a profession that matches her physical strength. She also tends to complain about having to do any tasks, yet is also shown to enjoy it from time to time. The fairies have taken to calling her Ms. Sweets because she has learned the forgotten art of making candy, for example. All in all, she is intelligent, cunning, a bit cynical, and vague about her motivations.

Abilities
She has a sentient hair,  also has Super Strength and a mind of its own, but is thankfully loyal to its master.

Trivia

 * In episode 11 a teacher comes close to revealing The Mediator's name, only to fumble and grab a form to double-check. The Mediator then interrupts her by answering the question before the teacher has a chance to correct her mistake.
 * The Mediator is twice shown wielding a knife and being willing to use it for violence. In The Fairy's Secret Factory she intimidates the chickens with it and in The Fairies' Homecoming she stabs a slime creature, who then breaks the knife.
 * Silver assumes that The Mediator has a romantic connection with The Assistant .