Ajim

Ajim is the het ship between Jim Lake Jr. and Aja Tarron from the Tales of Arcadia fandom.

Trollhunters
To make up for the days of school he missed, Señor Uhl assigns Jim to show Aja Tarron and her younger brother Krel around town, even though Jim and his friends need to collect some items for Merlin he decides to merge the two tasks together. When the trio first take the siblings to the Janus Order, to collects dead Changeling bones, Jim tells them that it is a "top, secret teen-center", and they notice that Krel is nowhere to he seen Jim asks Aja where he went they find him to the monitoring room where it shows security footage of Jim's battle to the fake Gummar. Luckily Aja thinks that they are seeing is a "moving picture story" and because they spent too much time in the underground liar, Jim and the others take Aja and Krel to Claire's house as the next stop on their tour. After Aja hears Jim saying that he and Toby are trying to catch lighting in a bottle, she and Krel led the trio their assistance, while Krel turns the bottle into a lightning catcher Jim and his friends watch Aja hack into the town's power grid so she can supply them with the lightning; without the need to wait for a storm. To make sure that it gets into the bottle Jim changes into his armour, that Aja became amazed at as she asks him what the power source is while taking a close look at his amulet, before setting his sword into the ground and ducking for cover with the others. Once they got the final item on the list, Jim thanks Aja and Krel for their friends, as they couldn't have gotten it without them, and hopes that they'll be able to see them again during the summer. Before the siblings parted ways with their new (odd) friends, Aja tells them that they'll probably see them again at the teen center.

3Below
Originally, Aja first met Jim when they bumped into each other during a science fair in "D'aja Vu". Before they met on that day, Jim and his allies were chasing after the Trickster Troll, Porgon, the troll finds a piece of Akiridion tech, that fell from the Mother Ship when the Tarrons came to Earth, and uses it to escape from them all while affecting the space time continuum. By resetting time. Jim was the only one who reminders the days he relives through as they lead to the day of the science fair, where bumping into Aja was the only new thing that happened to him on that very day. When Porgon attacked and Jim was a about to use his amulet, Aja gets out her shield to block the troll's attack, Jim asks her about it before Porgon reset the day. Just as a confused and frustrated Aja is about to leave the build, again, Jim pulls her aside so he can ask Aja for her help, based on the strange item that summoned the "bobble thing", and is relived to know that she also remembers the repeat.

3Below
D'aja Vu
 * They show each other the blue colored items that are protecting their memories.
 * Even though the time line has changed and they have no memory of the repeated day or each other, a small part of what Aja learned from Jim about patience had somehow stayed with her.

Fanon
The friendship the two formed in "D'aja Vu" and both being sad about the fact that they have to change the timeline in a way that would prevent them from meeting or remembering each other, just so they could maintain their secrets, could have started the ship. As well as the fact that both Jim and Aja have gone through warrior training under their mentor-trainers, carry around blue, glowing objects that provides them with a sword and have a non-human form that gives them blue colored "skin". Aja's true alien/Akiridion form and Jim's human-troll form.

On AO3, the ship only has 12 fanfics.

Fandom
FAN FICTION

Trivia

 * Some of Jim and Aja's actions and moments in their own Arcadia tales are similar to each others, in which has those brief moments and small actions as some of the few Parallels between the two tales.
 * As they both had bad dreams about their tales' main antagonist, lye on the ground after being pushed onto it, hit Steve in the face and have steered that the items that have "made" them their given tasks.
 * Jim is the third known Trollhunter to encounter and help an Akiridion, just as Aja and her small party are the second known group of Akiridions to became stranded on Earth.
 * The first Trollhunter being Spar the Spiteful, while the name of the female Akiridion he helped is unknown. Their encounter might had began the prophecy of Trolls and Akiridions meeting again, for when the blue colored Alien race entrust Troll kind with the care of Gaylon's Life Core so the wrong hands wouldn't be able to use its power to destroy the universe. The prophecy was fulfilled by Kanjigar the Courageous, the Trollhunter before Jim, and King Fialkov and Queen Coranda, Aja's parents, hundreds of years before Jim and Aja meet.