Dark Anime Demon Slayer Poster

Goal: Create a gritty vertical anime movie poster for {argument name="character name" default="Tanjiro Kamado"}, inspired by dark shonen fantasy and Demon Slayer aesthetics, with a ruined battlefield atmosphere, dramatic flames, water breathing effects, and distressed vintage typography.

Canvas: Tall poster, 2:3 aspect ratio, full bleed, with a thin double-line tan border and aged paper texture. Use a high-detail painterly manga style with rough ink lines, film grain, soot, scratches, ember particles, and warm orange-black contrast.

Main subject: Center a teenage swordsman in a dark uniform and green-black checkered haori, standing in a powerful three-quarter pose. He has spiky burgundy-black hair, hanafuda-style earrings, and an intense heroic silhouette. His face area is covered by a plain medium-brown rectangular censor block, while the hair, ears, neck, and body remain visible. He grips a katana with both hands near his waist, angled diagonally upward to the left. The blade is wrapped in bright turquoise-blue water energy, with one distinct curling water slash sweeping from the lower center toward the upper left. The haori should look torn and windblown, with many ragged pieces flowing outward.

Background: A burning demon-slaying battlefield at night. Show a large ghostly profile portrait of the same swordsman in the smoky sky behind him, facing right, with glowing reddish highlights. Include one ruined Japanese pagoda/building on the right midground, one tattered vertical banner on the right with dark calligraphy, collapsing wooden structures and rubble along the bottom, flying ash, black debris, sparks, and red-orange fire clouds. The overall mood is apocalyptic, heroic, and tragic.

Typography and layout: Make the design look like a Japanese theatrical poster mixed with a Spanish title treatment. Include exactly these visible text groups:
1. Large vertical Japanese title on the upper left: 「希望」, distressed cream ink.
2. Small red seal stamp beside the left title with Japanese characters resembling 「竈門 炭治郎」.
3. Vertical Japanese text box on the upper right: 「心を燃やせ 全てを懸けて」 with a smaller line 「鬼滅の刃」.
4. Vertical Japanese text box on the lower left: 「命を繋ぎ、未来を照らすために」.
5. Dark calligraphy on the right banner: 「鬼滅」.
6. Main Spanish title across the lower third, huge distressed serif capitals: {argument name="main title" default="LA VOLUNTAD INQUEBRANTABLE"}. Put “LA” smaller above “VOLUNTAD”, and “INQUEBRANTABLE” below.
7. Red small-credit line under the title: {argument name="credit name" default="TANJIRO KAMADO"}.
8. Small white subtitle under that: {argument name="series subtitle" default="KIMETSU NO YAIBA"}.
9. Bottom row contains exactly three icon-caption blocks: left sunburst icon with “UN HERMANO. UNA PROMESA.”, center lotus icon with “UN CAMINO DE SACRIFICIO.”, right checker-square icon with “UNA ESPERANZA QUE NUNCA MUERE.”
10. Bottom-left small boxed technique label with Japanese text and English meaning: 「水の呼吸 / 壱ノ型 / 水面斬り」.
11. Bottom-center circular seal emblem containing the large kanji 「滅」 and tiny ring text.
12. Bottom-right small boxed technique label: 「竈門炭治郎」 and “WATER BREATHING / FIRST FORM / WATER SURFACE SLASH”.

Color and style: Use a limited palette of burnt orange, black, charcoal, muted cream, dark green, blood red, and electric cyan water highlights. Typography should be weathered, cracked, and partially eroded. Keep the composition dense and cinematic, with strong backlighting and high contrast.

Constraints: No modern objects, no clean vector look, no extra characters, no extra icons beyond the three bottom icon-caption blocks, no additional title text beyond the listed groups, and keep all Japanese text decorative but legible where possible.