Kyoukaisen no Horizon Portable

About

Kyoukaisen no Horizon Portable reimagines a fractured future where humanity clings to a terraformed Japan under strict historical simulations. Players take control of Tori Aoi, a student leader navigating political chaos as ancient nations invade and the governing Testament Union withholds critical plot details. The game blends turn-based combat with visual novel storytelling, letting you manage alliances, explore pocket dimensions, and figure out why Earth’s rebirth hinges on 15th-century power struggles. Character interactions drive the plot, with branching dialogue shaping relationships amid escalating war rumors. The game pulls from anime, novels, and original content, cramming over 80 familiar faces into its large cast. Sales hit 26,000 units in Japan’s first week, hinting at its niche appeal for fans of convoluted sci-fi worldbuilding. What sets it apart is the Testament’s role as both game master and antagonist, forcing players to question whose version of history they’re actually following. The student council sim mechanics add a layer of strategy as you balance war prep with daily governance of the drifting city-ship Musashi.

Storyline

In the far future, humans abandon a devastated Earth and travel to outer space. However, due to an unknown phenomenon that prevents them from traveling into space, humanity returns to Earth only to find it inhospitable except for Japan. To accommodate the entire human population, pocket dimensions are created around Japan to house the populace. In order to find a way to return to outer space, the humans begin reenacting human history according to the Holy Book Testament. But in the year 1413 of the Testament Era, the nations of the pocket dimensions invade and conquer Japan, dividing the territory into feudal fiefdoms and forcing the original inhabitants of Japan to leave. It is now the year 1648 of the Testament Era, the refugees of Japan now live in the city ship Musashi, where it constantly travels around Japan while being watched by the Testament Union, the authority that runs the re-enactment of history. However, rumors of an apocalypse and war begins to spread when the Testament stops revealing what happens next after 1648. Taking advantage of this situation, Tori Aoi, head of Musashi Ariadust Academy's Supreme Federation and President of the student council, leads his classmates to use this opportunity to regain their homeland.