Luka and Marc don't know each other very well, but when Scarlet Hawk Moth attacks Paris with an army of past, reakumatized villains, Marc is briefly seen standing, shyly behind Luka as they both stand among the crowd of fellow participates in the Parisian rebellion, so they could help Ladybug and Cat Noir take on the red colored army of supervillains while the two superheroes go to face Hawk Moth in "Mayura".
Since they both attended the boys-only party that Nino threw for Adrien in "Party Crasher", there is a chance that they might have talked or bumped into each other in passing. Because Luka's younger sister, Juleka, is in the same art club as Marc, there is a chance that they might have heard about each other from her.
In "Miracle Queen", Luka and Marc are seen spending the rest of the day with Marinette and Nathaniels' friends and classmates, as Luka and Marinette sit next to Marc and Nathaniel. There is a chance that both of them were victims of the title villain's wasps, until Ladybug and Cat Noir defeated Miracle Queen.
While the exact origins of the ship is a mystery, as the two don't know each very well, but there is a possible chance that it might have began when fans decided to ship them through their similar traits, as both Luka and Marc have black painted nails, wear hoodies and have a bit of an emo-like style to them. Or when the second part of the season two finale, "Mayura", briefly shows Luka and Marc standing not too far away from each other among the other Parisian rebellion participates, before they went into battle. Because Luka has also been fanon slash shipped with Nathaniel, fans sometimes have Lumarc rival with both Lukaniel and Marcaniel.
Since Marc is believed to be the, possible, future holder of the Goat Miraculous, it got a few fans to hope that Miraculous user Marc may one day get the chance to fight along side Viperion. As they feature this idea in some of their fanfics. Due to season two revealing that both Luka and Marc use their creative talents into words, with Luka's music and Marc's stories, fans like to feature Luka and Marc bonding with one another through their inspersions and passions, that have something to do with writing. With Luka writing Marc's inner song, while Marc writes a story about Luka (as either his civilian or hero self). Along with Luka and Marc's common shared friends being the people who bring the two together.
On AO3, the ship has only 11 fanfics about it. The slash ship also has a reasonable size fanbase and support on both Tumblr and DeviantArt. Some of the ship's fanart has them displaying their black painted nails, swap hoodies for fun and making a reference to their akumatized forms , as it is a common trait in the fanon universe of the Miraculous Ladybug fandom. As well as one fan artist casting them as Ladybug and Cat Noir for fun, along with it being a common trait to place fanon ship couples of ML as the main hero duo.
- Lumarc posts on Tumblr
- Luka x Marc posts on Tumblr
- Marc x Luka posts on Tumblr
- Luka and Marc posts on Tumblr
- Marc and Luka posts on Tumblr
|SHIPS||het||Adrienette • Adrigami • Alyadrien • Chlodrien • Chlonath • Chlonino • DjWifi • Gabenath • Jiminette • Kimdine • Lukagami • Lukanette • Lukloe • Marikim • Maxinette • Myvan • Nathalix • Nathanette • Ninette|
|slash||Adrinath • Adrino • Kimax • Lukadrien • Lukaniel • Lumarc • Marcaniel|
|femslash||Alyami • Alyanette • Chlila • Chlogami • Chlonette • Chloya • Julerose • Kagaminette • Lilagami|
|non-binary||AdriEon • Chlollen • Pladrien • Plikki • Tikkinette • Trilya • Waynino|
|poly||Adrigaminette • Kagalyanette • Kimaxdine • Lukadrinette • Lukagaminette|
|CHARACTERS||female||Alya Césaire • Chloé Bourgeois • Kagami Tsurugi • Marinette Dupain-Cheng|
|male||Adrien Agreste • Luka Couffaine • Nathaniel Kurtzberg • Nino Lahiffe|