Sparks of Tomorrow

Kyoto, 1886. Coal smoke clings to every wooden rooftop, and the brightest thing on any street is a gas lamp. Into this sooty twilight comes Sparks of Tomorrow, a 13-episode anime that aired on Tokyo MX from July to September 2026. It imagines an alternate Meiji era where two brothers dared to sketch a future powered by electricity, a future that one of them carried into war and never brought back.

The series follows Kihachi Sakamoto, a quiet tinkerer voiced by Yuma Uchida, and Inako Momokawa, the headstrong daughter of a sake brewer voiced by Sora Amamiya. When Inako stumbles upon a lost notebook called the 20th Century Electrical Catalog, she drags Kihachi out of his grief and back into the dream of lighting up Kyoto. But the Black Kites, a shadowy organization led by Kengo Kuga, want the catalog for themselves, as a weapon, not a public utility. The show balances invention montages with a slow-burn romance, all set against Kyoto Animation's most detailed period work yet. Composer Hitomi Koto blended koto and shakuhachi with modern synths to score the clash of eras.[edit]

The year is 1886, and Kyoto is a city of two centuries. Wooden townhouses stand next to brick factories. Rickshaws dodge steam-powered carriages. At night, the only light comes from gas lamps that hiss and gutter in the damp air. In this world lives Kihachi Sakamoto, a young man who once dreamed of something brighter.

Kihachi's older brother Seiroku was the charismatic one, the one who could talk a merchant into funding a prototype, the one who filled page after page of the 20th Century Electrical Catalog with blueprints for generators, lightbulbs, and motors. When the Boshin War broke out, Seiroku was conscripted. He took the catalog with him, promising to return. He never did. The official report said he died in a skirmish near Osaka. Kihachi, left alone, buried his ambition under a quiet life of repairing clocks and water pumps.

Five years later, a chance encounter at a shrine festival changes everything. Inako Momokawa, the daughter of a traditional sake brewing family, is frustrated. Her mother pressures her to marry a suitable man, but Inako wants more than a life of pouring rice wine. While cleaning out a storehouse, she finds a leather-bound book stuffed behind old barrels: the catalog. Intrigued by the diagrams and notes, she seeks out the only person who can make sense of them, Kihachi.

Their partnership is uneasy at first. Kihachi is reluctant to reopen old wounds. Inako is impatient, used to getting her way. But as they gather copper wire, magnets, and a salvaged steam engine, something clicks. The catalog's first blueprint is for a simple dynamo, a machine that turns motion into light. They build it in a rented workshop, testing it at night. The first spark is small, barely a flicker, but it's real.

Word spreads. A sympathetic merchant named Yosuke Mizoe (voiced by Koki Uchiyama) offers funding. A foreign trader, Kate Okura (voiced by Natsumi Kawaida), supplies rare components. But the Black Kites are watching. Led by the scarred and ruthless Kengo Kuga (Shunsuke Takeuchi), they believe electricity belongs in the hands of the military, a tool for war, not for lighting streets. Kuga's second-in-command, the enigmatic government agent Izo Masubuchi (Daisuke Hirakawa), has his own reasons for wanting the catalog. And somewhere in the shadows, a figure with a familiar face watches from rooftops.

The season traces a clear arc: from a single spark in a workshop to a public demonstration on the Sanjo Bridge during the Gion Festival. Along the way, Kihachi and Inako navigate sabotage, betrayal, and the weight of a dream that belongs to a dead brother. The catalog is not just a set of blueprints, it's a promise about the future, and everyone wants a piece of it.[edit]