Riku Ozaki

* Original
* Thermal Dragon

## Abilities

### Esper Power

[Flame and Ice Dragon](炎と氷竜(サーマルドラゴン/rt>) ) "Honō to hiryū" (Sāmarudoragon) lit. "Thermal Dragon")

## Media

### Appears In

A Certain Magical Index Ep. 1
A Certain Scientific Railgun Ep. 5

Riku Ozaki (尾崎陸, Ozaki Riku) is an ordinary man who processes a mysterious power from his whole body of ice, fire, and negation, creates on both his left and right, cancel, burn, and freeze all magic power, esper power, and other divine abilities on his left and right. He's a secondary protagonist in Toaru Majutsu no Index series and a secondary important character in Toaru Kagaku no Railgun series, As a Level 0 Academy City first-year high school student, his point-of-view allows the audience to become acquainted with the mysterious world of *Toaru Majutsu no Index and* is mostly involved in the events of its Magic Side.

He possesses the mysterious "Flame and Ice Dragon" on his left and right hand, which is capable of manipulating two powers: Cyro-Pyrokinesis and negates all forms of magic, esper powers, and other divine abilities.

## Appearance

Riku's most prominent feature is his spiky black-colored hair. He has dark blue eyes, and his body is toned and muscular. after defeating the level 5 esper Hollow, he gets a scar on his forehead above his left eye that is partially covered by his hair.

Riku Thermal Dragon Form is base on the Cross-Z Evol suit without a Build Driver.

Following the attack on the Queen Britannia and his temporary loss of Ice Fire Dragon Breaker, Riku briefly had a sky-blue and crimson red arm in place of his normal right arm, which could unravel and surround his body in the form of a dragon - a sky-blue and crimson red bipedal dragon with two tails, and two large bat-like wings at his sides, which stands upright on his two hind legs. His head however the horns are slightly larger and more curved.

## Personality

Riku is the type that acts before he thinks. He can never just sit around upon seeing someone in a pinch and will go to great lengths to protect or help the person. This he does at great risk to himself, which typically results in him being hospitalized for several days after each confrontation. When fighting seriously against a particularly strong opponent. Riku will usually first declare that he'll "destroy, burn, freeze, and crush that illusion" of theirs, before actually engaging. Though this is only part of Riku's well-meaning nature and kindness. Even when he is in a blank slate after losing his memories, Riku still displays this personality. Although lacking his memories, Riku does not appear to mope over the loss of them in particular, as the beliefs from his pre-blank state continue to motivate him, allowing him to understand what he needs to do even if he doesn't remember why. However, after losing his memories, he seems to approach people more cautiously, carefully choosing what emotion or mood to display when meeting someone he thinks he might know. This is to prevent them seeing through his ruse and exploiting him. When Riku and Touma meets Stiyl and Yua once again after saving Index and Athena, he displayed politeness and casualness towards him which made Stiyl and Yua suspicious. Riku then realized his mistake quickly and created an explanation for his behavior. Riku also bears no grudge towards former enemies and is willing to help them if they asked for it.

## Background

Riku is the son of Ryuji and Katsumi Ozaki who lives outside of Academy City. During his childhood,  he was often seen as a jinx because he always hates his life for being clumsy, stubborn, and misfortune that both his left and right hand and create and he was called "The Dragon of Fire and Ice " by people around him. Once, a bankrupt and superstitious person blamed Riku for his misfortune and stubbornest and tried to stab. A TV station heard about the incident and tried to make a supernatural show based on Riku, as well as releasing images of him without his family's consent. Because of this, Riku's father sent him to Academy City when Riku graduated from kindergarten, as it was a place where many unique and gifted people lived free from superstition and Riku could be free from the kind of things he had experienced back home. This, however, was somehow a deliberate plot by Aleister Crowley to bring Riku into the City, and one of the most obvious effects of this is the birth of Kazakiri Hyouka out of fear of the Ice Fire Dragon Breaker of both Power Negation and Cryo-Pyrokinesis.

### Life in Academy City

However, during his time in Academy City as a child, Riku always write letters to his parents of how much he missed them a lot; from there, he determined that even in the city of science, people still treated Riku differently due to his terrible luck and life.

According to Tsukuyomi Komoe, Riku used to be a "stubborn and lazy kid" in the past. It is also during this time that Riku discovered both his left and right hands can somehow dispel supernatural powers, specifically the psychic powers, Freeze Supernatural powers, and Burn Supernatural Powers used by the student of Acadamy City. This power, named Ice Fire Dragon Breaker, was only known by a few of Academy city's high-ups, especially by Aleister Crowley and Heaven Canceller. Since then, The Ice Fire Dragon Breaker that holds the Power Negation, Cryokinesis, and Pyrokinesis was secretly held as a power of great importance, despite Riku himself being officially classified as a Level 0.

Riku is treated as a precious person by his current high school classmates due to all their bad luck being attracted to him, as shown when they rejoiced upon hearing that Riku forget his homework and forget to turn in his assignments on time. Because of him, they get off lightly from things such as the teachers being annoyed at them for not submitting homework and their assignment that was due today. This is unlike how Riku life was before he entered Academy City, raising the question of whether Ice Fire Dragon Breaker power was sealed away sometime between him entering Academy City and the present day, seeing how the bad luck affects Riku alone and his life instead of before when it also influenced the people around him.

However, Riku's classmates, mainly the male students, *do* resent Riku for one thing – his impossibly good luck at getting girls' attention. This is due to many girls sympathizing with Riku's bad life and lucks and has gotten to the point where Fukiyose Seiri and also Yuriko Yamamoto, the only one who is critical of Riku clumsy attitude and Touma's lazy attitude to life, is called the 'Girl of Steel Walls' and 'the girl who is completely wary of Riku and Touma'. Many of Riku's and Touma classmates say, "Though Riku and Touma keep saying he's unlucky, he has the best position," and joke about if nobody can stop Touma and Riku, humanity will end due to him taking all the girls. After class is over, Riku and Touma finally met each other, and they talk about how their luck comes to the hellish disaster and Riku felt the same way but this time he hates his luck and life because of his clumsiest and his stubbornest attitude of his and they both become best friends because of having a similar misfortune and their luck turned to waste. Surprisingly, Touma and Riku still haven't gotten into a serious romantic relationship even with this kind of female attention. This is possibly due to his friendship with Tsuchimikado Motoharu and Aogami Pierce, the latter often joking of supporting Touma and Riku to build a harem that covers every type of fetish imaginable. Touma said he'd break Aogami and Motoharu's fantasies on this topic using his Imagine Breaker and Riku said he can negate any power and manipulate Ice and Fire from his left and right hand together. Motoharu has named Touma's and Riku's 'ability' to get girls chasing after them without much effort as the *Kami-yan disease*, and applied this to Stiyl Magnus and Yua Miakami hearing about how Stiyl and Yua got chased by Tsukuyomi Komoe and couldn't even throw her off easily using the 'Opila' runes. Komoe also once half-seriously said he might have an esper ability (AIM diffusion field) that causes girls to trickle down to him. Most people around him, such as Index and Misaka Mikoto, consider it "normal" for him to have girls around him and are usually quick to jump to conclusions about what he's doing (or done).

Due to Touma and Riku being a Level 0, he has to take even more make-up lessons than usual as he does not have the required academic achievements. This does not mean that Touma is unintelligent and the same goes to Riku, for being an idiot as on many occasions he has shown quick thinking in combat. Lessar even outright stated that Touma is extremely smart in some aspects but not others except Riku. It is also shown that Touma and Riku at least have a good grasp of physics, being able to calculate the flight path of an HsB-02.

Even before the start of the series, Touma and Riku could not ignore someone in trouble and would help people regardless of who they are. Indeed, this is how his life is intertwined with Mitsuari Ayu, Shokuhou Misaki, and Megami Ninki. Ayu is a girl who was at an impasse in her development as an esper and attempted to commit suicide in Ground Geo on the same day as Touma met Misaki and Riku met Megami. He and Touma would've been able to save her if not for Touma dropping his cellphone and Riku ruined his breakfast when he and Touma ran into Misaki and Megami. Touma and Riku would later visit Ground Geo as it was the sight of Ayu's suicide attempt and there, he and Touma met Misaki and Megami again, inadvertently preventing her from erasing her own memories out of depression. They would later meet up several times, with Riku giving her a badge. Their relationship could be compared to that which later developed between Riku and Erina — acquaintances that often run into each other in the city. Touma and Riku later protected Misaki and Akeno from Deadlock by using his own body as a shield. The result of this encounter is also quite similar to that of Touma, Riku, and Index, ending with Touma and Riku losing their memories of Misaki and Akeno, though this case is different in that Touma and Riku also received anterograde amnesia specific to her but Riku is much worse than amnesia he also vomits blood while he was at the hospital (any new memories he and Touma forms of Misaki and Erina are soon forgotten).

As for Mikoto and Erina, Touma and Riku first meet them when both girls were being harassed by thugs. At first, both girls were impressed that he and Riku was the only one who was willing to come to their aid (even though she and Erina could have handled the thugs all by herself). Both girls then became annoyed by him after he and Riku accidentally insulted them, resulting in her discharging a powerful amount of electricity and the amount of water as a drill at the thugs as well as Touma and Riku, though he was unaffected because he used his right hand and unaffected to Riku because of his right hand that freezes any esper power, magic power, and other divine abilities and shatters it by squeezing the frozen object and his left is similar to imagine breaker. This became the catalyst that made her consider him someone she must beat and Erina that she will never lose too and must beat. For some time, Mikoto and Erina continually stalked Touma and Riku demanding them to fight both Mikoto and Erina, even though both Mikoto and Erina were still unaware of Touma's power of his right hand and Riku power of both his hands.

Touma lives on the seventh floor of his apartment building and Riku also lives on the seventh floor but lives five doors away from his apartment building.

### Regarding his memory loss

So far, only a few people know the truth about Touma's and Riku's memory loss. They are Heaven Canceller (who took care of Touma and Riku after the incident in which he suffered it), Terra of the Left (deduced it from Touma's lack of knowledge about Imagine Breaker and Riku about the Ice Fire Dragon Breaker), Misaka Mikoto, and Erina Fukumoto (overheard the conversation between Touma and Terra and Riku and Subaru), Fiamma of the Right, Index (from Fiamma telling her), Kumokawa Seria (she implies this in the Love Letter SS, but it's unclear how she learned of this) and Mitsuari Ayu (she tells Misaki and Akeno that Touma's and Riku memories have been lost beyond their powers, but it's unclear how she learned of this). Shokuhou Misaki and Akeno Izanami also knows about Touma's and Riku's memory loss, but only about the one they suffered after he and Touma saved them in the past. Whether They're is aware of his last one or not is unknown.

## Abilities

Riku's ability is (Flame and Ice Dragon ((炎と氷竜(サーマルドラゴン/rt>) ) "Honō to hiryū" (Sāmarudoragon) lit. "Thermal Dragon")?) a mysterious power that resides in his left and right hand that he has had since birth. It is able to process cryo-pyrokinesis and negate all supernatural powers including magic, Esper, and divine powers the last of these demonstrated by Archangel Gabriel's fear of touching him. It is also speculated by Index and Athena that it Freeze, Burn, and Negates the divine protection of God and his blessing, as well as the red string of fate. Riku was the current holder of the Flame and Ice Dragon, and the mysterious power itself has a preference to Riku being its bearer, as there is meaning in Riku having it in his left and right hand, or in Fiamma's own words: *"the right-hand freezes and left-hand burns when it is growing from his shoulder both sides." According to Othinus, Riku's knack for escaping dangerous situations through external factors and his inability to die is a form of misfortune and life as well, and she refers to it as the "greatest of all [his] wretched luck and life".*