Aeril Vi Arcadia

Aeril Vi Arcadia(エーリル・ヴィー・アーカディア Eriru Vī ākadia) is a member of the Lords and the Second Imperial Princess of the 13th Generation Royalty of the Holy Arcadia Empire, alongside with her now deceased sisters Listelka and Hayes. She was once disguised as Coral Esther, the aide of Greifer Nest of the Vanheim Principality. She revealed her true identity and betrayed the Seven Dragon Paladins, capturing them for as hostages for her family. Shortly after, she switched sides and began fighting against her family after her sisters' deaths by the hands of Fugil Arcadia.

Appearance
Aeril is a girl with a young appearance, slim body and white skin. Her hair and right eye are light grey. Because Baptism has been applied to her body, her left eye is a pale green.

As Coral, she appears to be an androgynous young man with green hair tied in a braid and beautiful features.

Personality
Despite being born a member of the Lords during the prime of their rule, Aeril has always been kind towards people of lower status. Unlike her sisters, who are obsessed with restoring the Holy Arcadia Empire's prime in the name of their "superior" bloodline, Aeril is aware that their atrocious behaviour towards their own citizens (including using them as raw materials to create Elixir) is what led to the empire's collapse.

Aeril is usually cheerful, sociable and a little bit mischievous. While working as Greifer's aide, she often had to act as the voice of reason and responsibility for him, much to his annoyance.

Listelka Rei Arshalia
Aeril loved and cared for her sisters, going along with their plans for some time despite her own misgivings. However, Listelka using Aeril to revive the Ragnarok and framing her as the one responsible proved to be the last straw, with Aeril then being convinced to actively fight against her sisters. Even after this, she still cared for Listelka and was furious at Fugil for betraying and killing her.

Hayes Vi Arcadia
Aeril loved and cared for her sisters, going along with their plans for some time despite her own misgivings. She nevertheless opposed Hayes' attempts to torture the captive Seven Dragon Paladins. After being manipulated by Listelka, Aeril turned against her sisters and worked together with Lux to defeat Hayes. Even after this, she still cared for Hayes and was furious at Fugil for betraying and killing her.

Fugil Arcadia
As a member of the Lords, Fugil was only believed by Listelka. Aeril, Mishis, and Hayes felt strange of him. After Aeril is the last member of Lords, she initially resents him but her feeling later becomes clear that she just doesn't want to be controlled in Fugil's hand like the fellow seven dragon paladins. Her resentment toward Fugil increased after he murdered her sisters.

Lux Arcadia
Aeril initially is surprised that Lux is really different from other member of Arcadia branch family over hundred years ago. She eventually fell in love with Lux. Her defection from the Lords was also influenced by Lux. After that, she attempted to seduce Lux using her sex appeal, asking him to undress her, much to the other girl's chargin. Her feelings for Lux is also professionally mutual when it comes to a bigger roles such as when she was asked if she wants to be Lux's wife, she declines, knowing that the responsibility of the king comes first, so she suggests to wait until his reign is over.

Greifer Nest
Aeril used to act as Greifer's aide. She would deal with any trouble that Greifer caused. Even though she betrayed the Seven Dragon Paladins, she rejoined as Greifer once again following her sisters deaths by Fugil.

Yoruka Kirihime
Yoruka initially thought of Aeril (when she was still acting as Coral) as a nuisance who wastes Lux's time and prevents him from making an heir.

Background
When she was a princess, her livelihood was full of happyness. The folks in the palace spoiled her. One day, she was interested in the word "friend" from books. Then, she met a boy who had misunderstood her a male.

8 years later, Then, the entire Arcadia Empire of this era had gone. Fugil had switched side to Clan of Traitors. The survivors were brought by Fugil. Around Diseld Arcadia's rulling era, they awaken from long slumbers.

At some point, Greifer got drunk and revealed to Aeril a story of his past. He told her about how he used to have low aptitude for Drag-Rides, but this changed after he met a strange girl.

Yoruka Arc
Aeril (in her guise as Coral) accompanies Greifer to the All-Dragon Battle, an international Drag-Knight tournament being held in the New Kingdom Atismata. When Greifer equips his Drag-Ride to chase down a thief, leading him to confront Lux Arcadia, Aeril scolds him for acting recklessly. She introduces herself and Greifer and apologises for the latter's behaviour, offering some of Greifer's money as part of this apology. Lux turns this down and expresses hope that this incident won't make them hate the New Kingdom, surprising Aeril as he doesn't act like a member of the Old Empire's imperial family. They shake hands, then Aeril takes Greifer away.

One of the Vanheim Principality's Drag-Knights is later attacked by what appears to be a New Kingdom Drag-Knight, causing Greifer to attack Lux in revenge. Coral intervenes and makes Greifer stand down. She and Lux agree to pretend as if this incident didn't happen, to avoid making it into a major problem for their two nations.

Mel Arc
She and Greifer come as dragon paladin from Vanheim Principality.

Campus Festival Arc
Aeril disguise as aide of Greifer Nest. In this arc, she is a helpful, upstrong and kind boy who helps Lux and Celistia who get kidnapped. She also is happy to be a cafe buttler along with Greifer throughout festival.

Rosa Arc
She sneaks and is in charge to dig information from King of Vice. As Coral, She comes to investigate Heiburg and helps Lux to defeat Rosa and conceals him after fighting against Rosa.

Singlen Arc
She is appointed to monitor Lux Arcadia for two weeks as the agreement which has been made beforehand by alliance.

Dragon Marauders Arc
Aeril (as Coral) comes to help to arrest Soffice Xfer after she has fleed from prison without making commotion. At episode 6, Coral and other girls engage the Dragon Marauders and a ragnarok. Not long after the battle started, Dragon Marauders explode the surroundings, resulting the ceiling shatters and falls down to hit them. Everyone is not in life-threatening except for Coral whom vommiting blood everywhere. When the others leave him, Coral sneaks to get ancient documents about Ouroboros, elixir and history. She eventually figures out what the future will lie beyond if someone with wicked personality controls the world via the ruins.

After Dragon Marauder was knocked down, Aeril uses her left eye who allow her to access Ruin's power. She uses it to subdue Seven Dragon Paladins.

Holy Arcadia Empire Arc
Aeril is the main female character. She betrays the Lords in this arc. Since the beginning, she intends to steal a march to obtain Avalon. Her first move is to have Lux under her surveillance Lux. She proposes to Listelka without being revealed. Listelka grants her wish. After Lux and Aeril are free from being watched, Aeril then explains her plan. Lux wavers hearing that. He cannot possibly believe in her like that. But then, he accepts it since he does not have any other choices. They then sleep well in that room. Tomorrow morning, she already has cooked while Lux was still sleeping. After breakfast, they start to subjugate Avalon.

However, Listelka laters traps Aeril and has the seven Ragnaroks revived and summoned. Due to that, Lords's battle power is increased significantly, only for World Alliance to be overwhelmed.Trembling all over because of Listelka's ultimate scheme, Aeril then heads to portal. She then orders Lux to hinder all of the girls from chasing her down. She orders him to kill them with Reload on Fire. The girls then attack her and the truster is damaged. Krulcifer and Lisha will finish her off but Lux generates a barrier. He then explains that from the start, he could have been able to put off the Wedge by utilizing Senjin and Reload on Fire to compress Wedge's power. However, it is not possible to tell him right away. He is necessary to help her in obtaining Avalon

Ouroboros Arc
After the Seven Dragon Paladin and she lost against Fugil, Aeril is kidnapped in Garden. After Fugil subdued Aeril, Fugil activate Ouroboros's Endless. In the world where Fugil can freely overwrite History, present and future, kidnapped Aeril is made to be in the New Kingdom.

Rebellion Arc
After Fugil had killed Singlen, Aeril was subdued and prisoned in Ruins. Lux and Kilzrake Family come to free her and steal a Grand Force which is installed. After they withdraw, Aeril follows Kilzrake Family to their base. She currently is hiding in Kilzrake Family's hideout.

Abilities
Aeril is a highly capable Drag-Knight, being comparable to Yoruka Kirihime.

Perception manipulation: Due to her Baptism, Aeril can access part of Avalon's system to manipulate people's perceptions. However, the power itself has a limit and is not as powerful as Ouroboros's Endless.

Wire Tail: Aeril has the rare skill of being able to use the Wire Tail as a main weapon rather than supplemental weapon.

Zahhak
Aeril uses the Divine Drag-Ride Zahhak.

Brain Hack: Zahhak Divine Raiment, which allows Aeril to erase something from her opponents' memory. The person it's being used on won't be aware of what they forgot until Aeril reveals it, even if they know about Brain Hack and are taking precautions against it. Brain Hack is a very effective ability if used strategically, as it can allow Aeril to catch her opponent off guard by making them forget about one of their abilities. Even a opponent as powerful as Fugil was cautious of this ability.