MeiLuka

MeiLuka is the femslash ship between MEIKO and Megurine Luka from the Vocaloid and Project SEKAI fandoms.

Canon
Meiko and Luka are both characters from the voice synthesizer Vocaloid. Both Luka and Meiko don't have an official personality or backstory as they are vocaloids. Meiko and Luka's relationship depends on the song that they sing together. They also have in common that they belong from the same company (Crypton Future Media) so they are usually together in semi-official media, such Project DIVA and Project SEKAI.

Songs
There aren't many popular Meiko and Luka duets, but there are some. Meiko and Luka songs tend to have a mature aesthetic. Their most popular duet in NicNico is Futairo (by Shigitoshite-P), that talks about unrequited feelings between them. They also have a Project DIVA commissioned song called Colorful × Sexy, that is a jazz version of Miku and Rin's song Colorful × Melody. Other not very well-known MeiLuka songs are:
 * Scarlet M∞N (by Gozen-P)
 * So-La (by Shu-t)
 * Blade　of　lament (by BingoBingo)
 * Imitation Rain (by Function)

Games
In Project DIVA F 2nd opening Meiko and Luka are together and they are separated from the other Crypton Vocaloids for some reason, so Miku, KAITO, Len and Rin go to look for them. It is later shown that Meiko and Luka live together, separate from the rest of the other Crypton Vocaloids.

In Project SEKAI Meiko and Luka appear together in every SEKAI. They have many different dynamics depending on the SEKAI. In the Empty SEKAI, Luka helps Nightcord at 25:00 members to discover their true feelings and wants to stir things up, whereas Meiko believes they should keep their distance and let them solve their problems on their own, so they are often at odds with each other. Luka's affinity for stirring things up causes her to seek Meiko out often to bug her, this results in many fans viewing the two in a "divorced couple" light. In the Wonderland SEKAI, the two are almost always seen together as Meiko is usually taking care of a sleeping Luka. It is also stated multiple times that Luka's favorite napping spot is Meiko's lap. In the Classroom SEKAI, Meiko and Luka act as mentors to everyone, and are often seen together teasing the younger Crypton Vocaloids. There are even times when Meiko teases Luka, resulting in the other getting lightly flustered. In the Street SEKAI Luka and Meiko get along well, with one area conversation including Luka teasing Meiko by calling her a "cute nickname" and then Meiko laughing it off and offering her coffee. Stage SEKAI, they are an idol duo, stating in both the story and area conversations how there are always songs they want to perform together and how they love singing together. Meiko has also been shown holding Luka's face and squeezing her cheeks in this Sekai, as she states they are incredibly soft.

Fanon
Although isn't the most popular ship for neither of them, because of the two more popular ships Negitoro, and KaiMei, MeiLuka has a relatively big following. Many people like to ship them due the fact that they are both Crypton Vocaloids with a mature look and voice. It is very often shipped alongside MikuRin, and sometimes alongside KaiLen, GakuKai, KaiMiku and RinLen. There are over 90 works for this ship, being the 2nd most popular ship for both girls. It is also the 10th most popular Vocaloid ship in general.

Fandom
FAN FICTION

FAN ART

TWITTER

Trivia

 * Their Kizuna Ranks include: "Beautiful Older Sister", "Cool Beauty" and "To Be Able to Respond to Your Feelings".
 * In Project SEKAI, they have an another vocal duet for "Ghost Rule".

Variations

 * 4 Crypton Girls refers to the ship between Hatsune Miku, Kagamine Rin, Meiko and Luka
 * The Adults Squad refers to the ship between KAITO, Kamui Gakupo, Meiko and Luka
 * Big 8 refers to the ship between Hatsune Miku, Kagamine Rin, Kagamine Len, KAITO, GUMI, Kamui Gakupo, Meiko and Luka
 * Cryptonloid Gang refers to the ship between Hatsune Miku, Kagamine Rin, Kagamine Len, KAITO, Meiko and Luka
 * KaiMeiLuka refers to the ship between KAITO, Meiko and Luka