Astil Manuscript

The Astil Manuscript or Sora is a legendary grimoire said to contain information about another world. Originally belonging to Hijiri, Sora has since contracted with Arata, supporting and protecting him after becoming a magus.

Personality
Sora has a very proud and cheerful personality, being enthusiasic in most situations regardless of any dangers. As such, she is quite straightforward and open, unafraid of speaking her thoughts. However, because of this, she can appear spontaneous and audacious, usually making suggestive comments or acting in a risque manner. Nevertheless, Sora is good natured and easy to get along with. In her first meeting with Arin, the two immediately became friendly with each other. Additionally, she can be quite shrewed and mischievious, finding amusement in observing and teasing those around her, especially of her master, Arata whom she enjoys for his upfrontness and unpredictability. But despite her easygoing attitude, Sora is highly loyal and reliable to Arata and his friends, willing to fight and support them; although, she can be too lax on certain occassions. In those situations, she can become serious and determined, helping and watching over them numerous times. Nontheless, Sora will remain obediant and devoted to her master, trusting in their decision and carrying out their requests. Before Hijiri's disappearance, she would follow her last order to grant Arata's last wish. Likese, during the Royal Biblia school festival, she became suspicious of Anastasia-L, warning Arata of her and waiting on his choice.

Furthermore, Sora exceptionally confident and proud of her own abilities as a grimoire, commonly proclaiming herself as a genius in spite of not quite understanding the process. Being Arata's grimoire, she has excellent teamwork skills, able to work together with him effectively and efficiently. During battles, she can become more focused, but rarely does she lose her composure. As such, she is still usually lighthearted and nonchalant. However, she can sometimes become overconfident and reckless, leaving her open after using powerful attacks. Regardless, Sora is quick to recover to composure and decide on a proper course of action.

Notably, despite being a grimoire, Sora can become embarrased in certain situations. When Astral Trinity erased her magic as well as stripping her naked, she expressed shock and disbelief that he would actually attack his own grimoire.

Appearance
Sora's true form is a small, gray ornate book, bounded with chains. However, she has the ability to change her appearance, initially impersonating Hijiri until Arata discovered her deception. Since then, she has mainly used her human form to interact with others.

Human Form: In her usual human form, Sora appears as a young petite woman with long grey-white hair and a large black bow on top of her head. Her attire consists of a black strapless camisole with white stripes connected to a black choker with a metal ring, a red mini skirt with white cloths, black stockings and brown loafers. Additionally, she also sports black arm sleeves held together with white bands, a black grommet belt, small black belts on both legs with the right one on upper thigh and left one on her ankle.

Abilities
Being a powerful and ancient Grimoire, the Astil Manuscript, "Sora" is capable of unleashing immense magical power, destroying her surroundings and destroying large groups of spectres in one burst. She has repeatedly shown the ability, with Arata, to analyze and modify other people's magic for her current master's use, though it's implied the ability to do so is her masters, she is the one who most understands the process and how it's done. She was also able to reconstruct.

Sora is prone to always leaving an opening after using a strong magic attack.

Techniques

 * Scarlet Geburah - Is the most powerful named attack Sora has used thus far, it creates a powerful wave of destructive magic, which stands on par with Arata's "Meteor Punisher" and Mira's "White Universe" respectively.

Masters
Arata Kasuga - TBA

Hijiri Kasuga - TBA

Grimoire
Ilia - TBD

Trivia

 * In the anime, the Astil Manuscript is referred to as the "Astil Codex" in the English translation