Es

Es, (エス, Esu) is one of the 2 prison guards in MILGRAM and the main protagonist of the series who represents the viewers. They're 15 and their gender is currently unknown.

They're voiced by Yurina Amami (天海 由梨奈).

Background
The protagonist of the series, Es woke up in the prison one day realizing they lost their memories. Before they knew it, they became the prison guard of MILGRAM, tasked with taking care of the prisoners and learning more about them. They aren't too worried about their past, and helps out Jackalope in the prison. He tries to work out the prisoners' crimes, motives, and personalities.

They have a fragile and ethereal appearance, though their gender is unknown.

One of the few hints about Es's gender could be the fact that they refer to themselves with "僕 (ぼく)" (boku) which is a masculine use of the pronoun "I" or "me" in Japanese, though this could be used without a reference to gender as well.

Personality
Es is a calm character, and interacts with the different prisoners humanely. They don't like to resort to violence, but will use it to get their point across if it's needed, as seen in Haruka's drama CD "The Writhing of the Weak".

Music Videos

 * "Undercover (アンダーカバー)"

Cover Songs

 * "HIBANA (ヒバナ)"