Sengoku vs Sangoku Crossover Poster

Prompt

A dramatic ultra-detailed vertical anime key visual poster showing a crossover war between Japan’s Sengoku era and China’s Three Kingdoms era, split exactly down the center by a glowing vertical beam of light. The left half is themed in crimson, magenta, ember orange, and cherry blossom pink, representing {argument name="left faction title" default="日本戦国"}; the right half is themed in jade green, teal, cyan, gold, and stormy blue, representing {argument name="right faction title" default="中国三国"}. At the center, large vertical Japanese calligraphy reads {argument name="center slogan" default="時空を越え、宿命が交錯する。"}. The composition is dense, cinematic, and symmetrical, like a premium game or movie crossover poster, with dozens of sparks, petals, glowing particles, motion streaks, and layered background architecture.  On the left side, depict 4 distinct Sengoku-themed warriors. At the top left, a stern samurai warlord in ornate black and deep red armor with gold trim, long dark hair tied high and blowing in the wind, shown in a powerful upper-body portrait facing inward; behind him are sakura blossoms, banners, and stacked Japanese castles illuminated with neon-magenta highlights. Mid-left, show 1 battle-hardened older general with wild silver hair, heavy layered armor, and a fierce glare, partially emerging from the fortress cityscape. Lower-left, show 1 aggressive crimson-clad warrior lunging forward with sweeping cloth, horned or antler-like helmet ornamentation, and dynamic red-black armor. At the bottom-left foreground, show 1 dominant swordsman in demonic samurai armor with a crescent-moon helmet crest and glowing red eyes, gripping a katana angled diagonally downward, surrounded by embers and petals. A vertical banner near the upper-left edge displays the Japanese text 日本戦国.  On the right side, depict 4 distinct Three Kingdoms-themed heroes. At the top right, show 1 regal strategist-emperor figure in elaborate blue, black, and gold ceremonial armor with a tall crown-like headdress, shown in upper-body profile facing inward; behind him rises a luminous spectral dragon made of water, cloud, and light. Mid-right, show 1 long-bearded green-robed general with a tall headpiece and lamellar armor, solemn and heroic, framed by neon-lit city structures and swirling magical energy. Slightly below center-right, show 1 elegant strategist-scholar holding an opened feat...