Eisaku Ōtomo
Eisaku Ōtomo |
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| Kanji | 大友 栄作 |
| Rōmaji | Ōtomo Eisaku |
| Age: | 16 |
| Birthday: | May 5 |
| Height: | 163cm |
| Voice Actor | |
| Japanese | Tatsumaru Tachibana |
| English | Ben Balmaceda |
Eisaku Ōtomo (大友 栄作, Ōtomo Eisaku), is a supporting character in the anime and manga series Ao Ashi. A first-year high school student and a midfielder for the Tokyo City Esperion FC Youth Team, Ōtomo is known for his upbeat personality, sharp instincts on the pitch, and close friendship with the series’ protagonist, Ashito Aoi. While not as technically gifted as some of his peers, Ōtomo’s persistence, work ethic, and team-oriented mindset make him a vital part of the Esperion Youth Team.
Throughout the series, he serves as both a source of comic relief and emotional support, offering levity and camaraderie in the high-pressure world of elite youth soccer. His journey reflects the importance of mental toughness and adaptability in high-level sports.
Background

Appearance in anime
Before joining Tokyo City Esperion’s prestigious Youth Team, Ōtomo played soccer casually and, like many first-years, faced the harsh reality of competitive football at the professional development level. Coming from a more relaxed and less technical playing environment, he quickly realized the demands of Esperion’s training system but chose to persevere despite the skill gap between him and others.
His background highlights a contrast between natural talent and cultivated passion, and he constantly works to narrow the gap through effort, learning, and team synergy.
Appearance
Ōtomo has short, spiky dark brown hair, with sharp, expressive eyebrows and a lean, athletic build. He typically wears the Esperion Youth Team uniform during matches and training, sporting jersey numbers that vary depending on team rotation.
His animated expressions whether beaming with enthusiasm or dramatically exasperated contribute to his role as a lighthearted character in otherwise intense moments.
Personality
Ōtomo is friendly, talkative, and slightly goofy, often acting as comic relief within the team. Despite his occasional airheadedness, he is emotionally intelligent and supportive, often stepping in when teammates are discouraged or tense. His loyalty and optimism balance out the more serious or stoic members of the squad.
On the field, Ōtomo is hardworking and strategic, often acting as a link between defense and attack. He doesn’t seek the spotlight but plays an important role in maintaining midfield cohesion and pressuring the opposition. His ability to read plays and support his teammates highlights his value as a team-first player.
Role in the Story
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Early Bond with Ashito Aoi
Ōtomo is one of the first players to befriend Ashito Aoi when the latter joins Esperion’s Youth Team. Their quick bond creates a sense of familiarity and trust on the field. Ōtomo helps Ashito adapt to the team’s culture, translating the intense environment into something more digestible and emotionally manageable. -
Growth as a Midfielder
Though not as naturally talented as some of his peers, Ōtomo steadily improves through hard work, gradually earning the trust of the coaching staff. His growth is often shown in small but meaningful moments perfectly timed passes, positional awareness, and defensive contributions that don’t always show up in stats but are essential to team success. -
Emotional Support and Team Morale
When tensions rise whether due to team changes, injuries, or internal rivalry Ōtomo often serves as the voice of balance and unity. His cheerful outlook keeps morale up, and his lightheartedness helps defuse conflicts, especially during emotionally intense arcs in the story.
Relationships
Ashito Aoi
Ōtomo is one of Ashito’s closest friends and earliest allies at Esperion. He serves as both a teammate and emotional anchor, often talking Ashito through difficult moments and supporting his unorthodox playing style.
Soichiro Tachibana
Another fellow first-year, Tachibana shares a friendly but competitive relationship with Ōtomo. The two form a trio with Ashito, adding depth and chemistry to the team dynamic both on and off the field.
Esperion Youth Team
Ōtomo is well-liked among his teammates for his humor and team spirit. He isn’t the flashiest player, but his consistency and positive energy make him an indispensable part of Esperion’s midfield setup.
