A kid inherits a mark his dead ancestor carried, and suddenly he's the only person on Earth who can pilot the one mecha that kills the things destroying his city. The show doesn't waste time on whether he's ready. He gets thrown into it anyway, and you're watching him figure it out while the clock runs down. This is 1989 mecha sci-fi that understands momentum: introduce the threat, introduce the kid, introduce the machine, then never stop moving.
When three massive Dragonites descend on Hokkaido in the near future, they don't just level a city: they free Jashin Drago, a demon sealed away two centuries earlier by an ancient warrior bearing the mark of the Liger. Now Drago and his empress plan to conquer Earth with an army of biomechanical horrors, and humanity's military is powerless to stop them. Ken Taiga seems like an ordinary teenage runaway until the Dragonites' attack awakens something dormant in his blood. The mark of the Liger warrior surfaces on his skin, and he discovers he's the last descendant of the only force ever capable of challenging Drago. Rage and desperation unlock latent powers Ken never knew he carried, transforming him from a frightened kid into something far greater. What follows is a race against extinction as Ken grapples with his inherited destiny. He must master abilities tied to an ancient bloodline while confronting an enemy that leveled armies. The odds are impossible. The power coursing through him is raw and untamed. Survival means embracing a legacy he never asked for.