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Enma Kozato is a rather gloomy and introverted transfer student at Namimori Middle School. Enma is the boss of the Shimon Famiglia. He previously attended Shimon Middle School, but he and his family transfered to Namimori after an earthquake hit their area. They chose Namimori because it is relatively earthquake free and they are invited to the Vongola Decimo's Inheritance Ceremony. His red eyes have a symbol very similar to the crest on his ring.
Enma has a laid-back appearance and is inferior in stature to many around him. He has red eyes (a trait he appears to share with the rest of his family) and red hair. He is a thin teen with a short build and he wears the usual Shimon school uniform. When not in his traditional uniform, he has been seen wearing a normal sweatshirt and jeans. He seems to slouch while sitting and buckles his knees near his midsection. When in Dying Will Mode, he seems to have one of the Seven Flames of the Earth on his head.
His social skills are poor at best; his shy demeanor and quiet voice make him an easy target for bullying. He appears to be weak-minded, even to the point that Hana Kurokawa describes him as "the type who'd get teased a lot." He reminds Tsuna of the way he used to be (and, in many aspects, still is). He seems to have a dislike for the Mafia, and has commented that he has on many occasions considered running away from it. Enma also does not have the respect of some of his own members of his family, mainly from Koyo, who tends to call him "Loser Enma." Enma however does seem to have serious side to him that he keeps hidden from others. An example of this would be when he gave Tsuna a cold glare and told him that they weren't in the same catagory because his family is weak and small and that Tsuna would never understand their pain. Reborn also stated that he felt a side to Enma that he has never felt from him just after they were attacked by hitman sent to stop the ceremony.
After his first day at Namimori Middle School, Tsuna witnessed Enma getting beaten up after school. Reborn takes full advantage of the situation by pushing Tsuna into the fray, which invariably ends in a sound beating for both boys. Afterwards, when Tsuna helps Enma gather his things, he hands Enma a textbook, which causes both Tsuna's Vongola Ring and a ring that Enma had tied around his neck to start glowing. Enma reacts with surprise and runs off.
Later, Tsuna (under Reborn's instruction) finds Enma at the riverside sewing his pants. Tsuna is mildly surprised at Enma's skill with a needle until realizing that the pant legs had been accidentally sewn together, a mistake highly remniscient of Tsuna's own Home Economics mishaps. Tsuna returns Enma's textbook, which was dropped when Enma ran off, and both trip and fall into the river. Tsuna invites Enma over to get clean clothes and have Nana sew his pants properly. Enma warns Tsuna to keep away from him if he wants to avoid the perpetual bullying. Tsuna is reminded of his own old, "helpless" demeanor, so he tries to explain to Enma that he is hopeless as well, so he is used to bullying. After an outburst from Lambo, Enma calls Tsuna's home "very lively". Tsuna immediately disagrees, saying that his home is much more "noisy" than "lively". Lambo then starts to hurl grenades at Tsuna, yelling that that their game of "Assassins" will start. Tsuna panicks and tries to get rid of a grenade, but is unsuccessful. After the explosion in Tsuna's room, Enma tries to find Tsuna, who is beneath his closet where he hides all his failing exams. Enma is relieved at having found a fellow useless human being.
Enma walks to school with Tsuna on the second day. After Tsuna suddenly recalls the strange sensation he'd had when their rings almost touched day before, he asks to borrow his hand for a minute to see if it would happen again. When they touch, he feels nothing and thinks that maybe he was just imagining things. Gokudera's surprise interruption scares Enma away at high speeds. He reappears a little while later at the fight between Hibari and Adelheid.
It is later revealed that he is a member of the Shimon Famiglia, a family which has ties with the Vongola even before the time of Giotto. He was invited, along with his family, to attend Tsuna's Inheritance Ceremony.
When Tsuna wonders what he should do about the Inheritance Ceremony, Enma suggests running away, which he often considers doing. This shows he has the same feelings about the Mafia as Tsuna does. When Tsuna takes Enma's suggestion to heart, Reborn appears and hits them both, adding to Enma's ever-growing list of injuries. He and Tsuna are then attacked by an assassin sent by the Pesca Family. Tsuna saves Enma by defeating the assassin easily. Reborn, however, senses something unidentifiable from Enma during the first few seconds of the attack, and immediately becomes suspicious. Later, it is revealed that Enma is, in fact, the Boss of his Family. He is shown to have a pendant-like object around his neck and his eyes light up with a Dying Will Flame while looking at it.
When Yamamoto and Kaoru practiced together, Reborn brought him along, after he saved him from a dog who tried to steal his takoyaki while he was eating it. He, along with the others, cheered Kaoru on by wearing vegetable costumes.
After Tsuna met the Ninth, he stayed at his house because he is the on guard duty. Tsuna then consulted with him about his conversation with the Ninth. He asked why Tsuna telling him this, and Tsuna replies because he don't have anyone that he can talk about Mafia. When Tsuna said that they are alike, he said not to put him in the same category because his family has dealt a lot of crap from other Mafia families because they are weak and small. Enma also said there are times when he feels he could be friends with him because Tsuna is different from other scary Mafia. Hearing this, Tsuna said that he already considered Enma as a friend even without a ceremony; he really thinks it's great that they could meet each other. Before Enma could say something, Nana called them to take a bath. Enma then immedietly called Adelheid, and said he really thinks Tsuna is not a bad guy. Adelheid then told him to test him by himself but reminded him not to forget the "Sin of Vongola." Enma then wrote a letter for Tsuna that he's threatened by the Mafia group who took down the Giegue Famiglia and is try to interfere with the Vongola Inheritance Ceremony. He planned to go to the factory side; they told him at noon and want his help. He then awakes at night and leaves the letter on Tsuna's desk and went to the factory. The next morning, he is seen waiting at the factory alone.Adelheid later finds Enma sitting alone in the factory and says that Tsuna went to school and ignored the letter he wrote. Adelheid tells Enma that the Vongola Inheritance Ceremony will be a success and that it is the only way to restore the Shimon Famiglia's power. Enma then responds that he knows. Enma later seen at the Vonogla Inheritance Ceremony getting beaten up by one of the guests, who wondered why a no-name family like the Shimon has come to the ceremony, but Adelheid intervenes and says that they had received invitations. Tsuna, who has seen this, asks if he is okay and wonders where he was yesterday. Tsuna tells him that he has decided to "go with the ceremony", Enma however appears to have him a dissapointing glare. He is later seen in crowds of ceremony waiting along with the rest of Shimon Famiglia, where Tsuna will receive the Vongola Sin from the Ninth.
After an explosion, the sin was broken open, supposedly by Enma. The ninth revealed that the Sin in the ceremony was merely a fake. He proclaimed that the real one was in a safe that was impossible to penetrate. Suddenly, the safe is broken open, and the open safe revealed Enma and his Family. Enma says he had needed this to take revenge on the Vongola. He breaks open the bottle of Sin and pours the contents (supposedly blood) onto his ring and goes into Hyper Dying Will Mode and his arm mutates into a robotic arm. Tsuna asks why he has done this soberly, then he as well breaks into Dying Will Mode and Enma prepares to face off against him. Tsuna asks Enma why they attacked Yamamoto, Enma reponds that he was a "Vongola Guardian" and it was a "rightful atonement." Enma then went on to explain that the Sin belonged to the Shimon Famiglia and that it was the blood of their first boss. Enma then asks Tsuna if he's ever heard the story, which Tsuna replies, "I don't deny that the blood of the Vongola runs within me. Neither do I have the ability to really find out what happened between Vongola and Shimon. I can't prove that it didn't happen. But there is one thing I can swear on my grave. Vongola Primo is man who would never do such a thing!" This angers Shimon and they make the declaration that Enma will inherit their family as the tenth boss and take revenge of the Vongola by gathering mafia from all over the world and standing above them as leader. The purpose of the war being to gain back the pride of Shimon. Adelheid and the others then release their rings as Enma says that the reason that Vongola Primo got rid of Shimon was because they had a power that rivaled the Dying Will Flames Of The Sky, which is the Dying Will Flames Of The Earth. Enma told Adelheid and the others to stay out of the fight against the five Vongola guardians. With his new found powers, Enma lifts Gokudera and Ryohei aside in the opposite direction of the wall. Chrome and Hibari are too lifted in the air, due to the sheer power of the Shimon Rings that have strengthen the Sin, the Vongola Rings break. Just then, Tsuna tell Enma to stop, and rushs in to attack him. Tsuna asks why is he doing this, Enma responds by saying that this is his fault, and that he has been watching Tsuna for sometime and that he would be different from other previous bosses. Tsuna is than overpowered by him. Enma proclaims that in seven day time, his power will grow, and that he only been using 1/7 of his full power and Tsuna's new Vongola ring broke. He then left with the rest of Shimon Family stating they want them to experience hell and they can kill them anytime.
After when Tsuna, and the others have recovered, they head of to Shimon Base to get Chrome back, and to stop them. Enma compliments, Tsuna and his Guardians for finding their base so quickly, and that they all came alone. Reborn asks why did they bring the those sinster bunch, the Vendice. The Vendice guards claim that their only reason for coming is to fulfill the promise between the First Shimon Boss and Vongola Primo. The Vendice state that since they considered one another as friends, the Shimon and the Vongola must never fight on another. The two bosses made a agreement to never attack one another, and thus, the Vendice made a law, in which the losing family would be erased from existence forever, and spend the rest of eternity in Vendicare prison. The Vendice state that since this is the second time this happen, they must fight one another.
Enma is normally seen taking orders from her. She seems to be very supportive in family affairs, and keeps the rest of the Shimon Family in line. She is normally seen giving orders even though Enma is the Shimon Boss.
Koyo, seems to have no or little respect for Enma, even though he is the Boss of the Shimon Family. He also frequently makes fun of Enma.
Tsuna is a lot like Enma, Tsuna already believes that that they have become good friends and Enma agrees, Enma tested Tsuna by leaving him a letter saying he was kidnapped, but when Tsuna didn't respond to it. He believed he was like the rest of the "Scary" Mafia and lost faith in him.
Weapons and Abilities
Enma is capable of using the Dying Will Flame which is a form of high pressured energy capable of having destructive powers or purifying evil auras. It initially lies within a person's body until it is awakened, helping increase a person's strength. When a person is able to control the full potential and power of the a Dying Will they are able to go to (Hyper) Dying Will Mode any time.
- Hyper Dying Will Mode: This is when one has been hit with the Criticism Shot or ingested two Dying Will Pills. Hyper Dying Will, instead of removing external limiters on the body and using pressure during a crisis, removes internal limiters; therefore, releasing the person's hidden awareness.
- Shimon Ring: Enma possesses one of the seven Shimon Rings, sealed by the Vongola Sin. When activated, his ring becomes a gauntlet on both forearms, surrounded by rings of text.
- Dying Will Flames Of The Earth: Enma posses one of the Seven Flames of the Earth his Flame is currently unknown, But it seems to be tied to manipulation of gravity.
- Manipulation of Gravity: Enma has been seen using Gravity to Malicious effect. Including attacking and defeating Tsuna and his Guardians minus Yamamoto and Lambo.
- Enma's eyes seem to contain the emblem of the Shimon Famiglia.
- Enma's name is a homophone for the Japanese name for Yama, the judge of the dead who decides a person's fate in the afterlife, although it is written with a different kanji.
- The characters for Enma in kanji can be roughly translated to "True Flame".
- In the Reborn Fandom, he is referred to as 00, as En and Ma (derived from Maru) can both mean circle, used as an alternate for zero.
- He was known as "Loser Enma" by Koyo, similar to Tsuna being called "No-Good Tsuna."
- He mistook Natsu as Tsuna's cat when it was actually a lion and seems to get along with him.
- In a recent popularity poll, he ranked 12th.
- His surname, Kozato, could be a Japanese transcription of Cozart, the name of the first Shimon boss.
- Enma and Tsuna have some simliarities:
- Both consider themselves no good Bosses.
- Both can be hopeless when they are out of Hyper Dying Will Mode.
- Both are reluctant Bosses of their Families.
- Neither want to be involved with the Mafia.
- Enma is known as Tsuna's equally pitiful friend.
- Both can enter Hyper Dying Will Mode, although Enma's version is much different.
- Both have similar appearances with the first Bosses of their Families.
- Both are the Tenth Bosses of their respective Families.