Japanese Summer Festival Poster Design AI Image Prompt

Japanese summer festival poster, vertical event flyer, print-ready, dramatic high-contrast illustration. Luxurious traditional Japanese festival design with navy-black night sky, metallic gold ink splashes, bold sumi-e brush calligraphy, warm red lantern glow, fireworks, ornate wave and hemp-leaf patterns, cinematic poster lighting. Color palette: deep indigo and black background, antique parchment gold full moon, bright red-orange lanterns, white and gold typography, small red accent marks. Main visual: huge glowing cream-gold full moon with rough circular brush texture and scattered gold paint flecks. Primary calligraphy: one enormous black kanji character '祭' painted across the moon in aggressive dry-brush strokes, with ink splatter and slight red shadow accents. Event title: large handwritten black brush script under the moon reading みなと夏祭り. Seal: small red square hanko seal near the title. Background: dark indigo night sky filled with gold speckles and ink-like texture. Fireworks: 5 bursts - very large red and gold burst in the upper left; medium gold and magenta burst near the upper center-right; large yellow and purple burst in the upper right; small orange burst at mid-right; small partial gold burst near the far upper-right edge. Decorative patterns: thin gold Japanese seigaiha wave patterns on the left edge and bottom-left corner, plus geometric asanoha lattice pattern on the right border. Right date panel: vertical dark navy strip along the right side with thin gold divider lines; date text: vertical white Japanese text reading 令和8年 8月15日(土)・16日(日); date elements: 8月15日(土), 16日(日). Lower information block: positioned lower left, three horizontal rows divided by thin gold rules. Row 1: icon gold plum blossom, label 時間, text 午後5時〜午後9時. Row 2: icon gold plum blossom, label 会場, text 港町中央公園 特設会場. Row 3: icon gold plum blossom, label 内容, text 盆踊り・屋台・打ち上げ花火(20時〜). Typography: clean white Mincho-style Japanese type with bold labels and slightly smaller details. Lantern scene: lower right foreground on a diagonal festival rope; 5 lanterns: small partially visible red lantern near lower center, small red lantern left of center-right, medium red lantern center-right, large red lantern right-center, largest red lantern at far right edge. Details: each lantern glows orange-red, has black top and bottom caps, black mitsudomoe crest, and gold-red wave pattern near the bottom; dark silhouettes of festival stalls and tiny warm lights behind them. Footer: small centered white organizer line reading 主催：港町夏祭り実行委員会; diagonal gold paint slash near the bottom edge. Composition: large calligraphy and moon dominate the center, date information balanced on the right vertical strip, event details anchored lower left, lanterns add depth and warmth at the lower right; preserve generous dark negative space and premium festival atmosphere. Rendering instructions: make the Japanese text crisp and legible, use realistic ink texture for calligraphy, metallic gold splatter, soft moon glow, vivid fireworks, no people, no modern logos, no photographic realism; designed as a polished promotional poster for a summer festival.