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Ajin Season 1 Review
Ajin: Demi-Human
亜人 (Ajin)


17 years ago, immortals first appeared on the battlefields of Africa. Later, rare, unknown new immortal lifeforms began appearing among humans, and they became known as "Ajin" (demi-humans). Just before summer vacation, a Japanese high school student is instantly killed in a traffic accident on his way home from school. However, he is revived, and a price is placed on his head. Thus begins a boy's life on the run from all of humankind.

Directed by

Written by

Screenplay by

Music by

TV Rating




  • The overall rating of the show.

Poor < Fair < Good < Great


  • Animation quality and consistency for that time. 

Poor < Fair < Good < Great


  • How well the story flows and keeps you engaged.

Poor < Fair < Good < Great


Character design
Character development
World building





Ajin: Demi-Human (Japanese: 亜人 Hepburn: Ajin) is a Japanese manga series written and illustrated by Gamon Sakurai. An anime television series adaptation by Polygon Pictures aired between January and April 2016.

Alternative title

– Ajin: Semi-Humano
– Ajin: Demi-Human
– 亜人
– 亞人
– 아인

TL;DR Review

Ajin: Demi-Human is one of the better done full 3D CGI anime, in my opinion.

The opening scene from the first episode is a bit jarring due to the 3D CGI being used. Eventually, you’ll hardly notice it. I didn’t even remember this series was completely 3D CGI until I rewatched it for the 3rd time.

The standout song from this season is the opening theme, “Yoru wa Nemureru kai?” (夜は眠れるかい?; Can You Sleep at Night?) by flumpool. The ending theme “How Close You Are” by Mamoru Miyano is all right, just not quite memorable.

Within the first few episodes, you’ll see how brutal and cruel this world is, perhaps a bit too similar to the real world. Kei, our main character can be calculating and maybe a bit of a sociopath. On one hand, he doesn’t seem to really care about anyone other than to give the outward appearance of normality. But he’ll cling to this fallacy despite causing him pain, as it is his only hold on his humanity. He’s a complex protagonist that you can’t be sure if you should be rooting for him or not.

I highly recommend Ajin: Demi-Human to mature viewer that enjoy plot and character driven anime. There are way more dialogs than your typical action anime. This anime contains graphic violence and some suggestive themes/dialogs. Intended for mature audiences.

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Featured Music

Ajin: Demi-Human

A collection of notable music and song from this series.


Opening Theme

TV Season 1

  1. “Yoru wa Nemureru kai?” (夜は眠れるかい?;Can You Sleep at Night?) by flumpool

TV Season 2

  1. “Boku wa Boku de atte” (僕は僕であって) by angela x fripside
  2. “The end of escape” by fripSide x angela

Closing Theme

Movie 1 (Shōdō)

  1. “Yoru wa Nemureru kai?” (夜は眠れるかい?;Can You Sleep at Night?) by flumpool

Movie 2 (Shōtotsu)

  1. “innocence” by Lamp in Terren

Movie 3 (Shōgeki)

  1. “The Birth” by Mamoru Miyano

TV Season 1

  1. “How Close You Are” by Mamoru Miyano

TV Season 2

  1. “At the Edge of the Schoolyard the Wind Blows, Can I Say That Now?” (校庭の隅に二人、風が吹いて今なら言えるかな / Kōtei no Sumi ni Futari, Kaze ga Fuite Ima Nara Ieru ka na) by CreepHyp
Nagai Kei
"I quite enjoy my life here. A quiet, peaceful and relaxing life. I have no intention of throwing that away."
Samuel T. Owen "Satou"
"When I play games, I always play on hard mode. Because the higher the difficulty... The more fun it gets."
Nagai Kei
"No matter when or where, people die as a result of poverty or conflict."
Samuel T. Owen "Satou"
"What's important is whether it's exciting or not."
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