JeArmin

JeArmin is the slash ship between Jean Kirstein and Armin Arlert from the Attack on Titan fandom.

Canon
In the "sudden visitors" OVA Armin was in team with Jean and wanted to help him. When Armin broke his legs he was unhappy because he was no longer any use to Jean.

Ever since their very first expedition outside the walls, Jean and Armin have remained very close friends.

Armin tried to protect Jean after he was knocked unconscious during the Scouts' operation to retrieve Eren.

When Jean was about to be killed by one of Kenny's subordinates, Armin shot her to save his life.

When Armin and Jean were disguised as Historia and Eren, Jean struggled to watch as one of their captors felt up Armin and made him cry. Later when Levi instructed Armin to fix the man's gag, Jean did it for him.

Armin confided in Jean about the real death of his parents, explaining that they were killed by Military Police.

Jean places great faith in Armin and repeatedly turned to him for advice when their situation became dire during the Battle of Shiganshina.

When Bertolt burned Armin, Jean cried at Armin's supposed death and was relieved and emotional at his revival.

Fanon
Armin and Jean are seen together at the end of some volumes like volume 21.

The shippers look at Jean’s cries like a manifestation of love for Armin.

JeArmin is shipped mainly by manga readers and a few anime viewers. It is one of the most popular yaoi ships in Attack On Titan.

Fandom
AO3