TV-Series
Description
Seiroku Sakamoto is a pivotal figure in the story of Sparks of Tomorrow, primarily known as the elder brother of the protagonist, Kihachi Sakamoto. He is a deeply charismatic and passionate inventor, whose life and work are defined by an all-consuming devotion to the potential of electricity. In a world dominated by advanced steam power, Seiroku stands as a visionary, dreaming of a future illuminated and driven by electrical energy. He is the co-creator of the 20th Century Electrical Catalog, a handwritten notebook filled with sketches and blueprints for advanced electrical devices that he and his younger brother envisioned together during their childhood.

Seiroku's background is marked by a strong bond with his brother, Kihachi, with whom he shared the dream of ushering in a new age of electricity. This shared ambition forms the emotional core of his character. However, this dream is interrupted when Seiroku goes to war, taking the precious catalog with him. He never returns from the conflict, leaving behind only a legacy of lost potential and unanswered questions. His disappearance is the central mystery that haunts the narrative and profoundly shapes the life of his brother.

In the story, Seiroku primarily functions as a powerful, absent influence. Though he does not appear as an active participant in the main timeline, his character serves as a crucial catalyst. His disappearance is the reason Kihachi becomes cynical and represses his own dreams of electricity. The reappearance of the lost catalog reignites the search for the future Seiroku envisioned, setting the plot in motion. His legacy is directly tied to the motivations of other key characters. The antagonist, Yosuke Mizoe, is also in pursuit of the catalog, seeking secrets that only he and the late Seiroku knew, adding a layer of intrigue and personal stakes to the conflict.

Key relationships define Seiroku's role. His most significant bond is with his younger brother, Kihachi. Seiroku is described as the older brother Kihachi admired, and his loss leaves Kihachi feeling betrayed and adrift. The entire narrative can be seen as Kihachi's journey to come to terms with his brother's legacy and reclaim the dream they once shared. Seiroku also has a connection to Yosuke Mizoe, as the two shared knowledge of the catalog's secrets, suggesting a past interaction or rivalry that fuels the present-day conflict.

While Seiroku does not undergo development within the main story, his character is revealed through the impact he has on others. He is portrayed as a brilliant but perhaps tragically flawed individual whose ambition led him down a path from which he could not return. His notable abilities lie in his inventive genius and charismatic vision. He possessed the foresight and technical skill to conceptualize an electrical future, documenting his ideas in a catalog that is considered revolutionary and, in his society, almost forbidden. His greatest ability was inspiring those around him, particularly his brother, to dream of a brighter, cleaner, and more innovative world.