Lycidas

Lycidas is the elder brother of Tsubaki, or Lilith and Soren, as well as one of the main characters of the series. He is especially close to his younger sister, Tsubaki.

Personality
Although brutal in terms of strength, he seems to truly care for his siblings, particularly Tsubaki, whom he loves very much. As shown in his route, he has shown a reluctance in fighting, stating that he did not really want to kill Renee in front of Tsubaki, saying that by doing so, it would sadden her. He has a complete big brother complex towards Tsubaki, deeply caring for her to where he has become more of a father figure to her.

He has a very dark and violent side, and will annihilate anyone who gets in his way. While he is truly kind towards Tsubaki, he isn’t afraid to harm those around her, including her mother, friends, and the person he believes to be Tsubaki’s “partner in marriage”, claiming himself the only one Tsubaki truly has, and states in return that Tsubaki’s all he himself has.

Lycidas’ hurting the boy who Tsubaki liked was most likely than not jealousy or envy, even possibly anger. It seems that Lycidas is simply the type of person who cannot “share love”, literally, both emotionally and mentality. He seems to have a misunderstanding of love, and difficulty seeing the differences between loyalty and liking-or-loving more than one person.

Despite his difficulty with seeing love properly, he is a good vampire and truly does have a good heart. His cry for love may or may not be the terms of  “desperation”, as he is simply desperate for love and attention, showing a sign of both an inferiority complex and insecurities. For these reasons, he is sad, and this cannot be helped, because it seems he does not want to help himself. While initially not a threat to Tsubaki, during another characters route, Lycidas is particularly not fond of said character and sees them as a threat to him as Lycidas is particularly jealous that said character makes Tsubaki so happy, which Lycidas wants to be the reason for Tsubaki’s happiness.

Magic and Abilities
Take Over (接収テイクオーバー Teiku Ōbā): Lycidas is a skilled user of Take Over, a type of Magic which, as the name suggests, allows him to take over the powers and appearances of particular creatures he really "knows". He shares such Magic with his siblings Soren and Tsubaki, something which made them known as the "Take Over Siblings". The particular form he employs shares the name of his signature spell Satan Soul (サタンソウル Satan Sōru). Due to the nature of Lycidas' Take Over, he has the ability to control Demons and manipulate them to do his bidding. Whilst having control over the tentacle Demons, Lycidas was able to cause them to simultaneously explode. Lycidas' Satan Soul is also capable of taking over Demons and Vampires on the brink of death, while saving them in the process; although they lose control of their bodies in return. Immense Speed: He can move far faster than humans and the average member of his species, above supersonic speed or even faster.
 * Satan Soul (サタンソウル Satan Sōru): Satan Soul is a very powerful spell, as well as the source of his epithet "The Demon" (魔人 Majin). Satan Soul allows him to take over the appearance, abilities and powers of a demonic being. When he activated it for the first time after two years of abstinence, he released a large magical blast which destroyed the surrounding area. Satan Soul is initiated by seemingly covering Lycidas’ body in flat, square-shaped scales-like parts, which subsequently disappear, revealing his new appearance. In such state, his eyes, eyelashes, ears, and hair all change drastically, and dark, thin markings appear all over his body. His forearms and hands become covered in scales, and each sprouts a fin-like protrusion on its outer side. He also grows a large, stocky tail, seemingly made of metal plates or scales. He also dons a pair of gauntlets covering the back parts of his transformed arms. Using this spell is extremely exhausting for Lycidas, so much that he cannot execute it in consecutive reprises. However, after his 3-month training, he was shown to be able employ his Satan Soul: Sitri (which Tsubaki commented on being one of his strongest) twice and his Satan Soul twice within the span of a few hours or even less, without any signs of fatigue. In order to utilize his Satan Soul form, Lycidas' body possesses the same Demon Particles found in the bodies of Tartaros' artificial Demons, resulting in an immunity to any physical alterations and a unique means of recovery.
 * Immense Strength: When employing his demonic powers, Lycidas' strength is increased to the point where he can easily break through solid rock with his punches. He was able to block a punch from Soren while he was in Full-Body Take Over with one hand.
 * Flight: In this form, Lycidas is capable of sprouting a pair of wings from his back at whim, which allow him to fly. Such wings are reminiscent of a bat’s, and come with small spike-like protrusions on their upper edges.
 * Enhanced Durability: This form increases Lycidas' natural durability, allowing him to take multiple powerful explosions in consecutive reprises, emerging almost unscathed and remaining active to continue the battle.
 * Poison Resistance: Lycidas' resistance against poison increases while in this form, where he could even inhale poison gas while calling it a "treat".
 * Darkness Magic (闇の魔法 Yami no Mahō): Lycidas has proven himself to be a skilled user of Darkness Magic. Using the Magic as his game-changer in most of his fights. Lycidas has shown to be able to use this Magic to enhance his physical combat capabilities, create powerful blasts, explosions, shields and even shape it into claw like tendrils capable of chasing after opponents.
 * Darkness Stream: Lycidas extends his hand towards the opponent and summons forth his Magic Seal underneath his opponent, where a multitude of large tendrils composed of dark energy is formed, which surround and envelope the opponent.

Enhanced Durability: The tissues of his body are considerably harder and more resistant to physical injury than those of an ordinary human. He is capable of withstanding great impact forces, and many other forms of damage.

Trivia

 * Lycidas is a Yandere.

Quotes

 * “If you hate me… hate yourselves for making an enemy out of me.”
 * “Because I'm also the type who'll do anything for the person I like.”
 * (To Tsubaki Tachibana) "Your mine and mine alone..."
 * (To Tsubaki Tachibana) "I'm so lonely without you..."