Arata Kasuga

Kasuga Arata is the hero of the manga Trinity Seven by Saitou Kenji and Nao Akinari. He is a Magic King Candidate who possesses The Astil Manuscript, the Legendary Grimoire.

Apperance
When Arata transfered to the Magic Academy, he started to wear the Academy's Uniform and usually has The Astil Manuscript in the fashion of a necklace or tied around his hand. In Magus Mode, Arata wears a sleeveless black shirt and a coat, his pants don't appear to change in magus mode.

Personality
Arata is usually carefree and and cheerful. When talking in his room with a member or members of the Trinity Seven usually something perverted happens and Lilith hits him when needed, being perverted is also the reason why Mira Yamana, the Top Seat of Grimoire Security, calls him filthy or impure. In times of need, however, Arata can become very dependable he doesn't want anyone to disappear when fighting. His perversion is also matched by unwavering bravery, in both serious situations where danger is high, and when he is fully aware that he's about to be struck for doing something "shameless". He's calm under pressure, even when his magic is stolen, sealed, or otherwise he is rendered helpless in a situation where the enemy is near he has never once lost his nerve. When he is caught in a somewhat perverted situation with a girl, usually Lilith or Mira, he will usually quote: "Thank you for the treat" or something to that effect, and has no issues confessing his desires in the pressence of others.

There are only two known weaknesses that can cause Arata to lose his cool. The first is Kasuga Hijiri, who is his entire motivation for becoming a magician and his driving force for most of the story. Liese was able to shake him mentally by offering information on her whereabouts, and when the two of them finally do meet he singlemindedly tries to take her back. The other is someone disappearing due to his own powerlessness, due to a trauma developed by Hijiris apparent "death". The first time this happens, he triggers Astral Trinity's awakening to prevent it.

As Astral Trinity much of his personality becomes quite different from before. Unlike Arata, Astral Trinity would intentionally go so far as to erase the magic of his Grimoire if she tries to attack him and is visibly more assertive, demanding, and forceful when dealing with the things he wants; namely he told Mira that she was worthy of him and told her to submit and was clearly very shocked when she slapped him in response. Astral Trinity seems more serious than Arata, although he can still be seen as rather carefree and whimsical. He is also something of a show off, summoning and manipulating a Breakdown Phenomenon to face off against three foes he clearly didn't need it to defeat.

During the Sky Library Arc, Arata finally admits that the Trinity Seven are nearly as important to him as Hijiri is, which is showcased by one of his very few shows of anger being directed at the other Magic King for what he did to Akio.

Powers and Abilities
Arata's Theme is "Rule", meaning he studies magic used to dominate and "rule". Arata's primary magical ability is dispelling other magic, often with the result of causing the victim to end up being stripped of all their clothing and thus earning it the nickname "Stripping Magic". His magic was capable of easily dispersing his own Breakdown Phenomenon. Arata, thanks to his abilities as a Magic King Candidate and his possession of the Astral Manuscript, is also awarded numerous powerful abilities which include those wielded by magus studying a completely different Theme, once he knows how it works and has had a chance to analyse it, he can replicate it with his own style twist. Firstly, he did this with Lilith's Alchemy, allowing him to form guns and firearms as she does, he used this to direct his Anti-Magic abilities rather than throwing them randomly at everything in his vicinity. Using this directed version of his magic he defeated a D-type demon dragon and dispersed his second Breakdown Phenomenon. Later he also learned to wield magic from the "Gula" archive, namely "Mantra Enchantment" which gifts him the ability to enhance his body for defensive or offensive use, namely he manifests a dragon-like entity based on the D-type demon he had defeated before. His abilities also seem to increase vastly at regular intervals, such as after losing his magic to Liese or turning into Astral Trinity for the first time.

When Arata's magic goes out of control he forms a very powerful Breakdown Phenomenon. A black sun appears in the sky above and proceeds to reduce everything below into base particles which it then absorbs, effectively wiping out a city in the first incident of its manifestation.

Astral Trinity
The "True Magic King" is Astral Trinity, who resides within Arata. When placed into a situation of particular stress or danger Arata undergoes the change into this being. Astral Trinity possesses all the same powers as Arata, Specifically his power to "Rule" however the sheer scale and malice behind their uses of this power is considerably greater in the case of Astral Trinity. He can direct his Anti-magic ability with simple gestures, defeating two grimoire and Mira, a specialist in deflecting all magics used against her, with overwhelming ease by this method. He can manifest and control the "Black Sun" Breakdown Phenomenon just as easily, effectively destroying an entire sealed dimension in moments. It has also been implied that Astral Trinity is capable of some form of hypnosis as Hijiri noted he will "suppress" the Trinity Seven.

Hijiri noted that Astral Trinity, the Magic King's, purpose is to unite the Trinity Seven and destroy the world with them, effectively hinting at the sheer enourmity of his power.

Relationships
Kasuga Hijiri - A mage from Royal Lieber Academy who posed as his cousin. The two of them have extremely powerful feelings for each other, as shown when Arata becomes a magician for no reason aside from saving her. She reciprocates, being willing to declare war against the world itself to protect him. Although technically enemies at the moment, the two of them talk more like an engaged couple

Azami Lilith - The first mage (besides Hijiri, who he didn't know was a mage initially) that Arata meets, and the Trinity Seven he grows closest to.