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Oneirosea (series)

The word Oneirosea in a blocky all-caps font. The top part of the R resembles a fish's head in profile
The Oneirosea logo.[1]

This article is about the anime series. For the location, see Oneirosea.

Oneirosea (sometimes stylized as ONEIROSEA) is a shōnen demographic anime series, with elements from the action, fantasy, and cyberpunk genres.

Table of Contents
  1. Story
    1. Setting
    2. Plot
  2. Trivia

Story

Setting

Oneirosea is set in an alternate universe version of near-future Earth. In this universe, human souls drift out to a separate dimension, the titular oneirosea, when they are dreaming. Inhabitants of oneirosea, called demons, attempt to infiltrate reality by possessing the bodies of sleeping humans. Humans have known about oneirosea for millennia, so they have developed many countermeasures against demonic possession; most notably, Alcyon Corporation is a global megacorporation dedicated to slaying demons, ostensibly to help keep humanity safe.

Plot

See also: Story Arcs

The story follows the adventures of Hiro Nimura, an enthusiastic new recruit of Alcyon Corporation's Offense Division. Eleven years ago, he was possessed by a demon and nearly died, but a mysterious woman wearing the Alcyon Corporation uniform saved him at the last minute. He greatly admires her, and hopes that by joining the corporation, he can find her and thank her properly one day.

However, nobody in the corporation seems to have heard of his savior, and she's nowhere to be found in the employee records either. Between demon slaying missions, he investigates this mystery, and begins to uncover the ugly truths that Alcyon Corporation is hiding from the public.

Trivia