Akutsu

Biodata

Feature	Information
Name	Akutsu Jin (Akutsu) 19
Alias(es)	“Devil”; one of Hyotei’s Big Three 155 211
Gender	Male
Affiliation	Hyotei Academy Tennis Club; later Country R’s junior-high team 21 221
Occupation/Role	Tennis player; Hyotei regular member and singles player 80 155
First Appearance	Chapter 19

Power Progression

Stage / Realm / Level	Chapter	Notes
Asura Path	22 86	Chiba Yun Chuan helps him open the path shortly before the preliminaries. Akutsu later demonstrates that he can freely control it, gaining a major increase in strength and aura.
Demonization	207 208	A deeper Asura state marked by black smoke, blood-red eyes, amplified strength, reduced sensitivity to pain, and heightened destructive instinct. Training lets him retain his reason while transformed.
Otherworld — Demon King	209	Repeated suppression by Niou’s Chiba Yun Chuan phantom pushes him into the Otherworld. He manifests a horned, winged Demon King phantom whose aura suppresses the opposing phantom.

Background

Before joining Hyotei, Akutsu attended Yamabuki Middle School but had not entered its tennis club. Chiba Yun Chuan sought him out specifically to recruit him, recognizing both his rebellion and his extraordinary ability to learn quickly. Though known for acting harshly to draw attention, Akutsu is described as gentler beneath that behavior. 19

Chiba finds Akutsu overwhelming Shiragami on a court near Yamabuki. Akutsu mocks Shiragami’s lack of talent, then ends the encounter by striking him in the face with a smash, causing Shiragami to flee. 20

Chiba challenges him on the condition that Akutsu transfer to Hyotei and join its tennis club if he loses. Akutsu becomes genuinely interested after experiencing Chiba’s Powerful Topspin Serve and Light Bullet, then demands that Chiba play until he can no longer move. Chiba exhausts him, arranges his transfer, and offers his mother employment. 20 21

At Hyotei, Akutsu’s strength rapidly places him alongside Atobe as one of the club’s strongest players beneath Chiba. He repeatedly challenges Chiba, endures punishing training meant to stimulate his potential, and develops the Asura Path far earlier than expected. 21 22

Appearance

Akutsu is an intimidating-looking player whose expression and mannerisms are frequently compared to a ferocious beast or demon. His appearance reinforces the oppressive aura he projects on court. 20 81

• White-haired in his later tournament appearances. 81 209
• Initially described with an afro, unusual eyes, and a fierce expression. 20
• Often crouches and bounces in place while awaiting play. 20 205
• His Asura states produce increasingly sinister visual effects, including red eyes and black smoke during Demonization. 207 208

Personality

Akutsu is proud, confrontational, and dismissive of players he considers weak. He enjoys being challenged far more than easy victories; Chiba’s overwhelming tennis is what first makes him take the sport seriously. 20 21

His tennis is naturally violent and aggressive, and he is prone to taunting opponents. However, he grows more controlled after joining Hyotei. Even while using the Asura Path, he can retain his thoughts rather than becoming a mindless attacker. 81 86

Despite his abrasive speech, Akutsu gradually becomes invested in Hyotei. He helps teammates train, tells them to get water during a tense match, and eventually fights with the explicit goal of winning the National Tournament for Chiba, Atobe, the team, and its supporters. 70 157 205

Abilities & Skills

Exceptional Physique and Stamina

Akutsu’s physical talent is his defining natural advantage. His stamina, arm strength, speed, and durability let him sustain punishing exchanges that other players cannot imitate. 21 82 91

• Withstood Chiba’s Light Bullet long enough to demand a full match rather than backing down. 21
• Played for an hour until exhaustion while Chiba tested his limits. 21
• Retains remarkable endurance during Niou’s phantom transformations, whose copied body cannot match Akutsu’s physical condition. 91
• The Asura Path further reinforces his body, allowing him to endure heavy impacts as superficial injuries. 206

Asura Path

Akutsu’s Asura Path is the opposite of the State of Selflessness: a difficult “path of hell” born from repeated defeat, refusal to lose, and the will to fight back. 86

• Greatly enhances his power and aura. 86 90
• Initially carries the risk of unconscious, instinct-driven aggression. 86
• Akutsu can control his thoughts while using it, making his aggression deliberate rather than indiscriminate. 81 208
• His desire to surpass Chiba is the central goal driving his Asura Path. 86 199

Demonization

Demonization is Akutsu’s deeper Asura transformation, triggered during his rematch against Niou’s Chiba Yun Chuan phantom. 207

• Enhances his strength, reactions, and destructive power. 207 208
• Lets him fight through pain that would normally hinder him. 208
• Allows him to infuse shots with Asura power, including attacks that can overwhelm a simplified Chiba Domain. 207
• His training preserves his lucidity in this state. 207 208

Otherworld: Demon King

Akutsu’s Otherworld manifests as the Demon King, a massive demonic phantom with horns, wings, claws, and an overwhelmingly evil aura. 209

• Emerges after his frustration at being repeatedly crushed by the Chiba Yun Chuan phantom reaches a breaking point. 209
• Suppresses Niou’s Chiba Yun Chuan phantom with its aura. 209
• Represents his passage beyond the State of Selflessness and into a higher realm of tennis. 209

Outer Spin Serve

A high-spin serve Akutsu learned from Chiba because its violent impact suited his style. He mastered its basics in a single day and refined it through repeated practice. 90

• The ball can spin across the court after landing rather than bouncing normally. 185
• The Asura Path sharply amplifies its speed, spin, and force. 90
• Demonization produces an even more powerful version capable of pressuring Niou’s Chiba phantom. 207

Demon, Burst Flash

A self-created high-speed scoring shot unveiled during the National Tournament final against Niou. 205

• Accelerates toward the baseline so quickly that Niou sees it only three times. 205
• Its shifting speed and hard-to-read trajectory make accurate interception extremely difficult. 205
• Used to break Niou’s serve twice in succession. 205

Insight

Akutsu possesses sharp observational ability that lets him identify an opponent’s blind spots and weaknesses. 37

• Targets Fuji’s weakness to force a missed return. 37
• His Insight continues improving under Hyotei’s training. 37

Tactical Adaptability

Though famous for direct attacks, Akutsu can alter his choices when an opponent anticipates his usual style. 91

• Feints a smash against Niou’s Akutsu phantom, then wins the point with a soft drop shot. 91
• Recognizes that an intelligent demon is more dangerous than one acting on instinct and consciously restrains himself to win. 91

Relationships

• Chiba Yun Chuan — Captain, recruiter, trainer, and the opponent Akutsu most wants to surpass. Chiba recruits him from Yamabuki, opens his Asura Path, and repeatedly pushes him through brutal training. 21 22 86 199
• Atobe Keigo — Hyotei teammate and frequent bickering partner. Their matches can end in draws when neither goes all out, but their rivalry gradually becomes a form of mutual concern. 21 70 155
• Niou Masaharu — Rival who repeatedly uses Niou Phantom to imitate Akutsu, Atobe, and Chiba. Akutsu defeats him in their Kanto encounter, later breaks through to the Demon King Otherworld while facing Niou’s Chiba phantom, and subsequently partners with him in Country R’s doubles team. 80 93 205 209 221
• Hyotei regular members — Initially kept at a distance by Akutsu’s temperament, but eventually accepted as teammates; he assists their training and pursues victory for the whole club. 70 157 205
• Akutsu’s mother — Chiba promises to secure her a good job as part of Akutsu’s transfer to Hyotei; Atobe is later noted to show subtle concern for her. 21 59

Story Role / Major Arcs

Recruitment to Hyotei

Chiba recruits Akutsu after witnessing his raw dominance over Shiragami. Their match proves tennis can genuinely interest Akutsu, and he transfers from Yamabuki to Hyotei under Chiba’s terms. 20 21

Kanto Tournament: Niou Masaharu

Akutsu is assigned to singles two against Rikkai Dai’s Niou. Niou’s transformations into Tezuka, Atobe, and Akutsu force Akutsu to reveal the Asura Path, Outer Spin Serve, and a more tactical side of his tennis. The match ends when Niou is injured and Rikkai Dai forfeits the singles match. 80 83 86 90 93

National Tournament

As one of Hyotei’s Big Three, Akutsu faces Jōsei Shōnan’s Kamishiro Reiji in singles and later joins Atobe in an unexpected first-doubles pairing. 155 184

In the National Tournament final rematch with Niou, Akutsu introduces Demon, Burst Flash. Niou responds by becoming a Chiba Yun Chuan phantom, pushing Akutsu through Demonization and finally into the Otherworld as the Demon King. Hyotei subsequently wins the National Tournament championship. 205 207 209 211

Country R Junior-High Team

Akutsu later forms a doubles pair with Niou for Country R’s junior-high team. Their combination defeats the Korea team 6–0, with Niou transforming into Akutsu during the match. 221

Notable Quotes

“Tennis can be this fun. Kid, you're truly different from the others!” 21

“Fakes are always fakes!” 91

“The first step to beating him starts with you!” 209