Issa is a cheerful and approachable man with a youthful, energetic appearance that reflects his personality. He has short, slightly messy light brown hair and expressive eyes that often sparkle with excitement. His casual style and relaxed demeanor add to his charm, making him a well-liked figure among his peers.

When attending formal shogi events or matches, Issa wears the traditional attire of a professional shogi player, including a hakama and kimono, but his lively personality shines through even in these formal settings.

Issa is characterized by his enthusiasm, humor, and genuine warmth. He is highly sociable and has a knack for bringing people together, often acting as the life of the group. His upbeat attitude and lighthearted approach to life make him a source of positivity for his fellow shogi players, providing moments of levity amid the intense pressures of professional competition.

Despite his playful demeanor, Issa is serious about shogi and respects the game’s traditions and challenges. He balances his enthusiasm with a genuine passion for the craft, inspiring his peers with his dedication. While his energy occasionally overwhelms quieter individuals like Rei, his intentions are always kind, and he genuinely cares for the well-being of those around him.

Shogi Community: Issa’s role in the story revolves around his interactions with the shogi community. His camaraderie with Smith and others showcases the lighter side of professional shogi life, offering a contrast to the more introspective and somber moments of the series.

Support for Rei Kiriyama: Issa is one of the many shogi players who take a liking to Rei Kiriyama. His affectionate and upbeat approach toward Rei helps to break through Rei’s guarded personality, even if Rei is sometimes taken aback by Issa’s exuberance. Issa’s presence serves as a reminder of the camaraderie and support that exists within the shogi community.

• Smith: Issa shares a close friendship with Smith, often engaging in playful banter and lighthearted interactions. Their dynamic highlights the camaraderie within the shogi world.

• Rei Kiriyama: Although Rei is more reserved, Issa’s energetic and affectionate personality creates a humorous and endearing dynamic between them. Issa’s support for Rei reflects his genuine care for his peers.

• Shogi Peers: Issa is well-liked by the broader shogi community due to his approachable nature and enthusiasm. His ability to connect with others makes him a unifying presence.

Issa Matsumoto adds a lighthearted and uplifting presence to March Comes in Like a Lion, showcasing the camaraderie and community spirit within the world of professional shogi. His boundless energy and affectionate nature make him a memorable and endearing character, providing moments of humor and warmth while reinforcing the series’ themes of connection and support.