The hit manga "Blue Lock" was adapted into an anime in October 2022. In 2023, it became the top-selling manga in Japan, surpassing popular titles like One Piece and Jujutsu Kaisen. This article provides an in-depth explanation of Yoichi Isagi, a character from Blue Lock. It includes details about their height, weight, abilities, past episodes, and images of their appearances in the anime.

What is the Anime "Blue Lock" Where Seishiro Nagi Appears?

"Blue Lock" (BLUELOCK) is a Japanese manga series written by Muneyuki Kaneshiro and illustrated by Yusuke Nomura. It began serialization in Weekly Shonen Magazine (Kodansha) in issue 35 of 2018. In May 2021, it won the 45th Kodansha Manga Award in the shonen category.

Blue Lock is a facility designed to produce the ultimate egoist—a single forward chosen from 300 high school players to become the world's best striker, with the goal of leading Japan to victory in the World Cup. The story follows the strikers as they are thrown into a series of ruthless selection tests, each sharpening their skills while grappling with the harsh challenges presented by the unforgiving system.

Basic Information on Yoichi Isagi from "Blue Lock": Height, Birthday and More

Source: Blue Lock Official Character Book, EGOIST BIBLE

Blue Lock Ranking: 299th (initial) → 15th (at the start of the second selection)
Birthday: April 1st
Age: 16 (Second-year high school student)
Zodiac Sign: Aries
Hometown: Saitama Prefecture
Family: Father, Mother, Self
Height: 5 ft 9 in (175 cm)
Foot size: 10.6 in (27 cm)
Eyesight: 2.0 in both eyes
Blood Type: B
Team before entering BL: Ichinan High School Soccer Club
Preferred Foot: Right-footed
Favorite Player: Noel Noa
Started playing soccer at age: 4
Motto: None yet
Self-assessed strength: Ability to see the good in others
Self-assessed weakness: Too concerned with how others perceive him
Favorite food: Kintsuba (sweet bean jelly wrapped in dough)
Disliked food: None
Best meal companion: Salted salmon (It makes him glad to be Japanese!)
Hobby: Walking
Favorite season: Fall (He likes the feeling of slight loneliness when it gets a little cold)
Favorite music: The "Hachimitsu Kinkan Nodo Ame" song (He hums it when in a good mood)
Favorite movie: My Neighbor Totoro (It always makes him wish he had a big sister or little sister)
Favorite manga: Cyborg Kuro-chan and Hero Hero-kun (He enjoys the stylish design of the art)
Character color: Neon green
Favorite animal: Spiny lobster (He likes the form)
Best subjects: Physical education and art
Worst subjects: Math and science
What he's attracted to: Thighs
Things that make him happy: Being praised, receiving sweets
Things that make him sad: Being ignored (After all, he's a living being too)
Ideal type: Someone who laughs a lot, has a beautiful smile
Number of Valentine's chocolates received last year: 0
Sleep duration: 7 hours
First thing he washes in the bath: His head (His father taught him it's better to wash from the top)
Impulse buy at the convenience store: Sour gummy candy
Kinoko or Takenoko (cookie debate): Kinoko (Mushroom-shaped cookies, he loves eating them in one bite!)
Recent thing that made him cry: Losing in the finals of the prefectural tournament, which was frustrating
Until what age did he receive Christmas presents from Santa: 6th grade
What he asked Santa for: A PS4
What he'd do on the last day of Earth: Enjoy kintsuba and delicious tea
If he received 100 million yen: He'd give it to his parents (because he doesn't know what else to do with it)
How he spends his days off: Playing soccer games, reading manga, taking walks (when he wants to think)

Yoichi Isagi's Background in Blue Lock

Isagi was a child with a different sense of things compared to other children, which often made him anxious and brought him to tears. However, he became captivated by the striker Noel Noa through television and dreamed of becoming the world’s best striker.

In high school, he enrolled in Ichinan High School, a soccer powerhouse. Though they were unbeatable in their local area, Ichinan’s playstyle was based on team play, focused on passing the ball to approach the goal. Serious and kind-hearted, Isagi sealed away his own ego for the team.

In the final match of the national high school tournament in his second year, Isagi decided to aim for a goal himself. However, in a crucial moment near the end of the match, he chose to pass to a teammate instead of shooting. His teammate missed the shot, leading to their defeat. Overcome with regret for not taking the shot himself, Isagi cried in frustration. But soon after, he received a letter from the Japan Football Union, inviting him as a designated player for special training, and his dream began to move forward once again.

Who is Yoichi Isagi 's Voice Actor in the Blue Lock Anime?

The voice of Yoichi Isagi is performed by Kazuki Ura, born on October 18, 1995, in Osaka Prefecture. The role of Isagi in Blue Lock marks his first lead role. Ura is an up-and-coming voice actor who has also portrayed characters such as Kyosuke Aiba in Futsal Boys!!!, Shota Doi in World's End Harem, and Subaru Makabe in Shadowverse F.

Yoichi Isagi's Weapon

■Spatial Awareness (空間認識能力)
With an exceptional field vision that allows him to see the entire pitch from a bird’s-eye perspective, Isagi can "smell" the opportunity for a goal. He uses this ability to devise strategies that lead to scoring or to avoid dangerous situations. After Team Y’s match in the first selection, Chigiri points out this skill, helping Isagi realize it as his true weapon.

■Direct Shot (直撃蹴弾)
The “Direct Shot” is a technique where the player shoots without trapping the ball, giving the opponent no time to block. Isagi combines his spatial awareness with his direct shot ability, completing a “goal-scoring formula.”

■Adaptability (適応能力)
During the second stage of the second selection, Isagi masters Naruhaya’s off-the-ball movements, which exploit blind spots. He awakens his "adaptability," the ability to continuously break down and rebuild himself into the most optimal version, without fear of change.

Yoichi Isagi 's Key Moments and Images from Various Episodes

Next, we will look back at Yoichi Isagi's key moments in each anime episode, along with images.

■The Beginning of Blue Lock's Story

The story begins with the finals of the prefectural tournament in the National High School Soccer Championship. Isagi was attending Ichinan High School, a local powerhouse, and was playing as a regular. However, Ichinan was a team focused on passing and team play to get close to the goal.

Though Isagi decided to aim for a goal himself, in a critical moment just before the end of the match, he chose to pass to a teammate. His teammate missed the shot, leading to their defeat. Overcome with regret for not taking the shot himself, Isagi cried in frustration. But soon after, he received an invitation from the Japan Football Union as a selected player for special training, and his dream began to move forward once again.

■The Entrance Exam

Responding to the invitation as a selected player, Isagi coincidentally meets Kira, the player who scored the winning goal in the prefectural final, at the entrance to the facility. Awaiting them both was the Blue Lock Project, which had gathered 300 forwards from all over Japan.

The first test was a game of “tag” involving 12 players where the ball was used to tag others. As the "it" player, Isagi initially targets Igarashi Gurimu, who was ranked below him. However, just as he was about to hit Igarashi, his inner ego rejected this idea. "If I continue like this, I'll remain the same. I have to beat those stronger than me to truly change." With this realization, Isagi receives a pass from Bachira, and he kicks the ball into the face of the strongest player in the room, Ryosuke Kira, securing his place in Blue Lock.

■First Selection, Match 1: Team Z vs Team X
In their first match against Team X, the absolute ace, Shoei Barou, overwhelms everyone on the field. Isagi notices that Team X's strategy revolves around passing to Barou while the rest of the team supports him. Unable to do much, Team Z loses 0-5.

■First Selection, Match 2: Team Z vs Team Y
In their match against Team Y, all eyes were on Hibiki Okawa, the top scorer of the Kumamoto prefectural tournament. However, Isagi realizes that it’s Ikki Niko who is actually controlling Team Y.

In a tense back-and-forth battle, Niko, holding the ball near the goal, opts to pass instead of shooting. Anticipating this, Isagi intercepts the pass. Breaking away from his past self who regretted not taking the shot, he sprints forward and scores, experiencing the greatest moment for a striker. Overwhelmed with a new feeling of exhilaration, Isagi looks down at a crying Niko, feeling a sense of satisfaction from crushing his opponent's dream, revealing the first signs of his awakened ego.

■First Selection, Match 3: Team Z vs Team W
Next, Team Z faces Team W, centered around the Wanima brothers, Keisuke and Junichi. After repeated pass misses and Kuon’s hat-trick in the first half, Isagi realizes that Kuon had betrayed them. Thanks to the awakening of Hyoma Chigiri, Team Z manages to escape with a 4-4 draw.

■First Selection, Match 4: Team Z vs Team V
In their match against Team V, genius player Seishiro Nagi opens the scoring, and Team V quickly takes a 3-0 lead. Team Z fights back with goals from Bachira, Kunigami, and Chigiri.

■Second Selection, Match 1: Isagi,Nagi, Bachira vs Rin, Aryu, Tokimitsu
In the first match of the second selection, Isagi faces off against the top 3 players in the new Blue Lock rankings. Though he, Bachira, and Nagi form a strong team, they are no match for the overwhelming skills and talent of Rin Itoshi, and they lose the match.

■Second Selection, Match 2: Isagi & Nagi vs Barou & Naruhaya
After Bachira is taken by Rin’s team, Isagi and Nagi are left with no margin for error and face Barou and Naruhaya. Naruhaya taunts Isagi, calling for them to take each other down as average players, but Isagi resolves to overcome his weaknesses and win the match.

“You can’t become the world’s best striker without reaching the side of the geniuses.”
Naruhaya attempts to score using his direct shot, but he fails. Watching this, Isagi realizes that by combining Naruhaya’s strengths with his own, he might be able to challenge the geniuses. He “reproduces” Naruhaya’s moves and makes them his own, scoring the goal and marking the moment he steps into the realm of geniuses.

■Second Selection, Match 3: Isagi, Nagi, Barou, vs Reo, Kunigami, Chigiri
Isagi initially plans to play in a way that supports Barou, the "king" of the field. However, when Barou becomes ineffective, Isagi uses him as bait to score a goal. Later, Barou, who had never passed to anyone before, is unconsciously drawn into Isagi’s “ego” and passes the ball to him.

“You're pathetic. Move for my goal.”

After scoring from Barou's pass, Isagi takes control of the field, turning the game’s spotlight on himself. He berates Barou, forcing him to taste defeat, and his once kind-hearted personality is replaced by a striker's unrelenting ego.

■Second Selection, Match 4: Isagi vs Rin, Aryu, Tokimitsu, and Bachira
In a rematch to settle the score from the first selection, Isagi and Rin engage in a battle to read each other’s moves on the field. Despite teaming up with Nagi, Isagi yearns to defeat Rin on his own and discovers a new “formula” to surpass him.

Reading Rin’s every move, Isagi identifies the “blind spot of a genius” and exploits it with a "back-heel direct shot," scoring a decisive goal.

Isagi's PV

Isagi's Ego Awakens

With each match, Isagi continues to evolve. By unleashing the "ego" he had once suppressed and battling against stronger opponents, he sharpens his skills. Watching him grow more powerful sends a thrill through us all. Can Isagi overcome his rivals and become the world’s best striker, bringing a revolution to Japanese soccer? Let’s all watch together as his journey unfolds.