Luminerik

Luminerik is the Slash ship between The Luminary and Erik from the game Dragon Quest XI.

Canon
Erik is contacted by an entity known as the Seer. The Seer tells him that one day, the Luminary will arrive and how Erik must help him to fulfil a prophecy. At first, he dismisses the Seer's words as utter nonsense, but out of his own curiosity follows them. In Heliodor, he and a man named Derk team up as bandits, stealing a red orb from the castle and stashing it near their hideout in the Downtown division of the city.

For his deeds, Erik is locked up in the castle dungeon, and surely enough, the Luminary does meet him. Erik learns that the Luminary was mistaken for the "Darkspawn", his opponent. Per the prophet‘s words, Erik offers to help him escape.

The pair is pursued by Heliodorian foot soldiers through the sewers below, then by a resident black dragon. Barely fast enough to outrun the beast, they survive, jumping to the foothills adjacent to the city. Taking refuge at a nearby church, they rest the night. Erik then proposes going after his prized Red Orb, another part of the prophecy, which should be in its hiding place downtown.

For the rest of the journey, Erik acts as the streetwise and stalwart companion, ever curious to know where the prophecy he was given may lead next.

At the end of one of Drustan's battle trials, the player "could pick someone to stay with me forever and ever!" Erik is one of those options. Picking Erik prompts Drustan to respond: "I see... Verily, living alongside a roguish fellow such as he would be very diverting indeed. Thou wouldst take Erik, thy stalwart comrade, thy sworn companion?" Picking yes prompts another response: "I understand thy desrire all too well. There were those among my comrades with whom I grew close beyond measure. Would that we could have stayed together... In any case, it shall be as thou desirest... ...... Tis done. Return to Cobblestone, I prithee. There thou shalt find what thou seekest. May you have a long and happy life together."

The game then later says: "And so, [Player Name] and Erik begin living together in Cobblestone. A few days go by..."

You then appear in Cobblestone with most of the people there congratulating you moving in with Erik. Your party members are also there giving their support. Sylvando notes that Erik seems to be enjoying himself a lot more lately, and believes "it's all because he's living with you - not that he'd admit that, of course!" Serena says it's wonderful that you're living with Erik, pointing out that you two were always so close. Veronica imagines "the kind of mess you two are capable of making." Hendrick struggles to imagine you and Erik sharing the same home commenting: "I have never found him to be anything other than companionable, of course, but making the leap to cohabitation is quite a different matter..." Rab grows envious and says you two "are having a grand auld time living together" feeling a bit left out. Then Jade appear curious about if they have problems living togther, wondering if they ever do chores.

Erik meanwhile is in your house waiting for you to talk to him and talks about how great living in Cobblestone is. Eventually he asks you if you're "ready to hit the hay." He then at some point asks if you want to "head out for a wander", more specifically Cobblestone Tor, the highest mountain cliff in the area. As you accept and walk outside, you can speak to him and he says settling down in Cobblestone might just what he needs due to being always on the move.

As you make your way to the top of Cobblestone Tor, you'll encounter monsters who you have to fight. Erik says during the fight: "Why don't we give them the old one-two?" After defeating the enemies, Erik remarks how annoying that was and that no monster in the world could beat him and the legendary Luminary.

After some time the two finally make it to the top, which reminds Erik that it looks just like the other cliff they both jumped off out from the Helidorian Sewers noting so much as happened since then. "Who would've thought the kid in the next cell would wind up becoming my best friend?" While looking over the view of the Tor, Erik turns to the protagonist suggesting a "crazy idea - why don't we see if we're still the luckiest guys in the business". He then jumps up yelling, the protagonist looks in shock then Erik flips to his backside and lands right on the edge of the cliff then teasingly says "I'm just yanking your chain! Heh heh! Your face!" with a smile. Then a sudden strong gust of wind comes out from the cave enough to make the protagonist stand his ground and makes Erik suddenly fall off. The protagonist runs in the nick of time to grab Erik's hand to keep him from falling, then smiles at each other chuckling. Squeezing each other's hand, the protagonist is able to lift Erik back onto the ground making Erik remark that was too close for comfort and thanks him. They then begin to gaze at each other for several seconds before Erik starts to laugh about what just happened and lies down saying "there's never a dull moment with me around huh?"

Erik then says there's something he needs help with from the protagonist when they're done saving the world. Explaining they haven't found half of the world's treasure and proposing they hunt it all down, split it and "retire rich men. Deal?" The protagonist nods in agreement, Erik holds out his fist and both fist-bump. They then continue to gaze at each other.

Fandom

 * Tumblr: https://www.tumblr.com/search/luminerik