![Kei Nagai](https://cdn.noitatnemucod.net/thumbnail/400x400/100/5de8b9a131d6153fe73bfa59de640d03.jpg)
Kei Nagai
永井 圭
A 17-year-old boy who is the main protagonist of the series. He is an Ajin. He is rather disliked by his little sister, Eriko, as she defines him as "trash."
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Ajin 2nd Season
Main (Role) TV -
Ajin: Demi-Human
Main (Role) TV -
Ajin OVA
Main (Role) OVA
![Miyano, Mamoru](https://cdn.noitatnemucod.net/thumbnail/100x100/100/1e2a746d4a2e61a55c2ffa90ccb18c60.jpg)
Miyano, Mamoru
Japanese![Bosch, Johnny Yong](https://cdn.noitatnemucod.net/thumbnail/100x100/100/f054f38d854c43b82cdb5533fe5c29e8.jpg)
Bosch, Johnny Yong
Brazilian![Asai, Ayaka](https://cdn.noitatnemucod.net/thumbnail/100x100/100/dedebe8d9cabaa4b2d8635bc7774d0ea.jpg)
Asai, Ayaka
Japanese![Taylor, Julie Ann](https://cdn.noitatnemucod.net/thumbnail/100x100/100/bc06e7508d15acf070e7f7b027eb4fce.jpg)
Taylor, Julie Ann
English![Marques, Diego](https://cdn.noitatnemucod.net/thumbnail/100x100/100/bab8a966a94542ebaf95370be14102d9.jpg)
Marques, Diego
Brazilian![Baehr, Patrick](https://cdn.noitatnemucod.net/thumbnail/100x100/100/30948f886a260e1a9a32a54c8a7bd931.jpg)
Baehr, Patrick
German![Contatori, Yago](https://cdn.noitatnemucod.net/thumbnail/100x100/100/67747684eceea93d607a225f5df6fd19.jpg)