Mikayuu

MikaYuu is the SLASH ship between Mikaela Hyakuya and Yuuichiro Hyakuya from the Seraph of The End fandom.

Canon
Formerly a member of the Japanese Imperial Demon Army and one of the seraph of the end. As the last surviving member of Mikaela's orphanage family, Mika is extremely protective over him, and saving Yuu is Mika's sole reason for living. Yuu arrived at the Hyakuya Orphanage shortly before the Apocalypse virus swept through Japan. Mika beat Yuu up right after they met, but they eventually became best friends. After the apocalypse, the vampires swiftly took them underground. Four years later, they tried to escape with their family, but Ferid Bathory killed the rest of their family in front of them. In order to give Yuu a chance to escape, Mika sacrificed himself and was fatally wounded. Yuu fled to the surface, and Krul Tepes turned Mika into a vampire soon afterward in order to save his life.

Unfortunately, Guren Ichinose picked up Yuu on the surface and has been experimenting on him to use as a weapon. Whenever Yuu is involved on the battlefield, Mika becomes reckless. Yuu stabbed Mika twice since he became a vampire, but Mika will risk his life for both Yuu and Yuu's so-called friends. Mika finally manages to escape with him in Nagoya. In chapter Mika holds Yuu's hand to comfort him.

Mikaela Hyakuya is Yūichirō's best friend and "family" since they were eight years old. Yuu calls Mika by his shortened nickname, "Mika". Mika immediately welcomed Yuu into their family when he was dropped off at the orphanage. Yuu initially refused Mika's friendship and even challenged him to a fight which lead to him getting beaten by Mika. Even after that, Mika brought Yuu into the family, and even related his parental abuse.

After the virus killed the orphanage director and the vampires took custody of the Hyakuya Orphans, Mika and Yuu looked after the younger orphans, eventually creating Yuu's "family." Yuu and Mika once discussed what they would do if they left the vampires' city, Yuu saying that he would like to go to paradise and Mika then smiling and saying that he should work hard, leaving Yuu confused. Later, it reveals that Mika had been going into the Progenitor's (Ferid Bathory's) home to offer his blood in order to steal a map and gun to escape.

Mika convinced Yuu and the rest of the orphanage children to come with him to escape the city through the Ferid Bathory's house, but is killed while doing so. Yuu was the only survivor and was haunted by his family due to him running away after they were slaughtered.

It turned out that Yuu was, in fact, not the only survivor, when Queen Krul saved and converted him into a vampire. However, he refused to become a complete vampire and subsisted on Krul's blood to keep his thirst at bay.

After Yuu joined the Moon Demon Company, he met Mika once more after he tried to kill him from behind after discovering that a vampire wanted to take one of his comrades. However, when he realized that it was Mika he stabbed, he pulled out immediately and was in complete shock and confusion. After realizing that Mika was converted, he retreated back with the Moon Demon Company and searched for ways to turn a vampire back into a human.

Mika saw Yuu once more on the battlefield after forcing information out of a soldier (Aiko Aihara) about Yuu's location. However, he spotted Yuu unconscious after his battle with Crowley, and thought it to be the humans' doing. He immediately rushed ahead to take Yuu from his group, but got severely injured while doing so. When he was about to die, the Shinoa Squad squad defended him while he took Yuu away.

After Yuu woke up, he saw how thirsty Mika was even after Krul's blood, and encouraged him to drink his own. Mika put up a fight against it, protesting all the way through, but he gave up after Yuu claimed that he could not live if he watched his family die once more. After he finally drank Yuu's blood, his eyes turned from blue to red, signaling that he has finally become a true vampire.

Mika's seemingly only reason to live was Yuu, and would go to any depths to protect him, even if it meant holding a sword to his throat. Yuu felt the same about Mika, but had a larger family he must protect and begged Mika to accept his new family.

(Citation, info taken from: https://owarinoseraph.fandom.com/wiki/Y%C5%ABichir%C5%8D_Hyakuya/Relationships#Mikaela_Hyakuya and https://owarinoseraph.fandom.com/wiki/Mikaela_Hyakuya/Relationships#Y.C5.ABichir.C5.8D_Hyakuya)

It is hinted at canonically that there could be a romance or at least near romantic feelings between them. They are also often seen together in official artworks.

Fanon
Mikayuu is the most popular ship in the series Seraph of the End. It's most rivaled ship is Yuunoa (Yuichiro Hyakuya and Shinoa Hiragi) and there has been a considerable amount of fighting and arguments over who Yuu will end up with. There are also arguments within the ship of which character would be the more dominant end. Mikayuu is a very popular slash ship with a ranking of 34 on a "top 50 anime ships of all time" page.

As of October 15, 2019, the pairing has just over 3k fanfictions on Ao3 and over 43k fanfictions on Wattpad. It has nearly 2k pieces on DeviantArt, thousands of blogs on Tumblr, and thousands of works on many other sites. Mikayuu week in 2019 is held from October 10 to October 16.

Fandom
FAN FICTION
 * Mikaela/Yuichiro tag on AO3
 * Mikayuu tag on FanFiction.Net
 * Mikayuu tag on Wattpad

DEVIANTART
 * Mikayuu tag on DeviantArt

TUMBLR
 * Mikayuu tag on Tumblr

Trivia

 * Mika says "Yuu-chan" 72 times throughout season 1
 * Mika and Yuu both blush frequently around each other
 * Mikayuu once ranked #1 for "most popular gay ship" followed by Genotama at #2
 * According to the fanbook, Mika loves Yuu more than in a brotherly sense
 * Ferid has called Yuu a number of things such as Mika's "beloved," or Mika's "precious princess."
 * Mika is the first vampire to bite Yuu, and Yuu is the first human Mika drinks blood from in the series
 * Child abuse was a large part of Mika's life as a child, as well as Yuu's, which began early conversations between the two of them
 * They were the oldest two, being 12, at the orphanage before the vampire reign began
 * "Serapuchi" is a project in which, quite frequently, scenes have heavily implied romantic senses
 * Their zodiacs (Taurus and Libra) are "two halves of a whole"