When Kidou and Otonashi were still very young, they lost their parents due to a plane crash and grew up in an orphanage. In a flashback, Kidou was seen fighting with some bullies because they bullied Otonashi. Kidou was 6 years old and Otonashi was 5 years old at that time. The only thing about their parents that Kidou has is an old soccer magazine, which is the only bond that connects him to his father. That's why Kidou started to play soccer; whenever he kicked the ball, he felt as if he was with his father.
Both Kidou and Otonashi were separated to different families: Otonashi to the Otonashi family, while Kidou was immediately recommended by Kageyama Reiji to the Kidou Financial Group after he recognized Kidou's talents for soccer at the age of 6. To bring his sister back, Kidou made a deal with his stepfather: he'll get consecutive National championships in the Football Frontier during his three years in junior high. If he can't win consecutively, Kidou won't be able to take back Otonashi. If he loses in a district match, Kidou may be forced to leave his own family.
Ever since they were separated, he has never tried contacting his sister even once, leading her to believe she's in his way. However, the fact is, it was for Otonashi's own sake. In order to live together with her, Kidou tolerate with everything and has never forgotten her at all, not even once.
Initially, Kidou was shown to be shady and haughty. He was also very obedient to Kageyama and always listened and obeyed his orders. However, he begins to change for the better as he realizes what kind of man Kageyama is later on. He starts going against his orders, searching around the academy for any traps, and threatening to reveal them to the public.
Kidou also seems very logical and reasonal, as he is a genius game strategist, Japan's command tower, knowing every single important thing there is to know about his potential opponents. He gets to know about everyone in 10 minutes and tilted the team's position correctly giving them commands. Kidou also cares for his teammates, and more importantly, his sister, like any other typical (elder) brother. He will do anything to help the although during the third season he had an identity crisis thinking that he couldn't escape Kageyama's curse. Kageyama almost tricked Kidou, saying that everything he is now is what he learned from Kageyama, but Kidou was able to surpass this.
In the manga, his shadiness stays, even as he enters the team, and sometimes ends his remarks with "what a wimp".
In GO, after ten years, he still retained some of his old personality, though he is more mature and calmer than ten years before. He also likes talking (or has the tendency to talk) about the past, as shown in episode 21 when he talked with Endou Mamoru.
Kidou wears a red cape for the half of season 1 while he was in Teikoku Gakuen and in the other half (starting from episode 17), he wears a blue cape until season 2 while he was in Raimon but it became red again during season 3 when he was in Inazuma Japan. He always wears blue and grey goggles which were given to him by Kageyama. His eyes are red without goggles, his hair is braided and tied. When he was little, he didn't wear goggles at all until Kageyama gave him the goggles. With the goggles, he could see where the ball exactly gets kicked, and exactly where it would land. When out of Raimon or just not wearing Raimon's uniform, tracksuit etc., he is seen wearing a red jacket, a black shirt, blue jeans and combat boots. In his house, he doesn't wear his jacket or combat boots, and replaces his combat boots with slippers.
In GO, his hair has grown longer. He wears a grey coat that matches his trouser's colour, a red tie, and a pair of burgundy shoes. He still wears goggles, although it's different from the previous season. The goggles are now bigger and instead of being blue with grey, they are now green with white. In Galaxy, he wears a black coat with a blue tie. During the first episode, he wears a red cape.
He appears at the beginning of episode 1, where he gives the command to destroy an unknown school. In episode 2, he and his teammates had a match against Raimon. At first Kidou was only interested in Gouenji, rather than the rest of the Raimon team. He sneaks around Raimon to investigate the team, making sure no one catches him. But then after Domon said that the Raimon bus was tampered so that they can't make it to the nationals, he begins to question Kageyama. In the match for the district national finals, Kidou checks the school making sure nothing has been tampered with. After seeing Kageyama's wrongdoings, he and the rest of Teikoku Gakuen made a decision to forfeit the nationals match, but their decision was left undone due to Endou's determination to play against them, they did.
Despite the fact Teikoku lost in the nationals, they are qualified as the last time winners to get in again. In their first match with Zeus, Teikoku lost. Kidou had injured his leg in the match with Raimon and since he doesn't have any information about Zeus he decided not to participate. He soon thinks of himself to be a disgrace. Eventually, he joins Raimon, changing his cape to blue. At first, no one in the Raimon team accepted Kidou, even his own sister. But after Endou protests, and Kidou's strategic mind helped them win the match, they accepted him. In the end, he decided to stay in Raimon. He helped Raimon to win the match against Kidokawa Seishuu and they won the Football Frontier and defeated Zeus.
In episode 27, at the first match with Gemini Storm, Raimon lost to them. He becames shocked when Goryuu Reo blocks Inazuma Break with only one hand. Then they met Touko and Fubuki to help win against them, but Gouenji quit the team, due to his own good. Then, he met Kageyama again in episode 38. But this time Kageyama made another team called Shin Teikoku Gakuen, which has two of his old teammates, Sakuma and Genda. They used the power of the Aliea Meteorite because Fudou convinced them. In order to save his teammates, he has no choice but to battle them. Eventually his old teammates came back to their senses, Sakuma badly injured. During that time the ship was sinking and everyone went off except for Kidou.
He faced Kageyama unleashing his anger, but the ship was sinking, shocked to hear that Kageyama had called Kidou his 'greatest creation'. Detective Onigawara had to carry him to the helicopter. During that time his old teammates were grateful for him. Then after sometime Kidou went to Teikoku Gakuen to know if he hadn't betrayed his teammates for leaving them and joining Raimon, during this time the Death Zone 2 was mastered by Kidou, Domon, and Endou. In the end Raimon won and defeated Aliea Gakuen but had to face the Dark Emperors. They also ended up defeating them.
Three months after the battle with Dark Emperors, he was one of the people chosen to represent Japan. Kidou was angry that Fudou was in the group. In one time Endou saw Kidou staring somewhere and wanted to know what he was thinking about, Kidou said that he can't escape Kageyama's curse. Mostly during the competition he keeps strategizing. During the time where Fubuki and Midorikawa were injured due to Fire Dragon's tactics, Perfect Zone Press, they were replaced by Someoka and Sakuma. At first the Inazuma Japan team still didn't accept Fudou. But after Endou protesting, the Inazuma Japan accepted him, just like they accepted Kidou in Raimon Eleven. The first time Kidou saw Kageyama was on the island they were in, Liocott. He also saw Fudou with Kageyama.
Both Kidou and Sakuma thought that Fudou was going to obey Kageyama's orders, harming the Inazuma Japan team so they wouldn't be able to get to the finals. Kidou also told Endou that Kageyama was on the island. That was in episode 90. Later, they came to know that Fudou was actually a good guy when they defeated Team K. Debuted in episode 93, also with the help of the Italy team, Orpheus. Sakuma, Kidou and Fudou practiced Koutei Penguin 3gou in one point to master it, in order to master it, they just needed to add height so that they can make it 3 dimensional. In episode 91, he had a feeling that Kageyama was on the same island as they are. Then Kageyama made a team called Team K so that they can take Italy's national team. Endou, Kidou, Sakuma and Fudou joined Orpheus for a while to fight against Team K. During episode 92, he almost came back to Kageyama and believed he can't truly escape from Kageyama because ever thing he learned was in fact from Kageyama. But he managed to reason out in episode 93 that he has already a new soccer and that's the soccer of Endou's.
In the match with Orpheus, Kageyama became a good guy and told Kidou that he wanted to play fairly with real soccer, but in episode 106, Kageyama died and he was very upset about it, and at the moment keeps Kageyama's sunglasses that Onigawara Gengorou gave Kidou. During episode 108, his sister Otonashi was going to be offered as a sacrifice by the dark angels and he was very angry about Otonashi being kidnapped. Then during episode 112, they sneak in the Kingdom's residence to see what is troubling the captain of The Kingdom. Afterwards, they fought against The Kingdom and won. Their next match was against Little Gigant and Hiroto, Fubuki, Kidou used Big Bang to score a point, though it eventually got blocked. But in the end, Inazuma Japan won.
In episode 126 he graduated from Raimon, and when it was Endou's turn to receive the diploma, it was seen that him and along with the rest of Raimon, they where all crying because they where about to go their separate ways.
Then in episode 127, they had one last graduation match with each other, in which he used Koutei Penguin 2gou with Fubuki and Ichinose but was stopped by Endou's God Hand thus the match ended in both groups not scoring a goal, since they where all equally matched. All of them listened to Endou's last speech, and promised that they'll keep on playing soccer from Endou's word that he said "Let's play soccer!" to which everyone happily agreed on.
- Japanese : Hiroyuki Yoshino
- English :
- all information on Kidou Yuuto came from http://inazuma-eleven.wikia.com/wiki/Kidou_Yuuto