It's clear "iiyo"

Refine the attached illustration while preserving its successful overall composition, architectural cross-section concept, visual storytelling and distinctive mid-century modern printmaking style. IMPORTANT: Do not redesign the image from scratch. Keep the same vertical composition, the contrast between the Marunouchi business district above ground and the warm underground dining arcade below, the architectural cutaway structure, the deep central perspective and the sophisticated limited color palette. MAKE THE FOLLOWING IMPROVEMENTS: 1. MORE AUTHENTIC CONTEMPORARY RESTAURANT ARCHITECTURE: Refine the underground restaurant storefronts to look like an actual sophisticated modern commercial dining zone in Marunouchi, Tokyo, rather than a nostalgic Showa-era izakaya alley. Emphasize contemporary glass storefronts, slim black metal frames, warm timber cladding, elegant illuminated menu displays and clean modern restaurant entrances. Reduce or remove traditional red paper lanterns, hanging noren curtains, rustic food stalls and other stereotypical old-fashioned Japanese alley decorations. Retain the welcoming atmosphere and warm wooden architectural elements. 2. REFINE THE YOKOCHO SIGN: Preserve the distinctive vertical burnt-orange sign on the wooden entrance structure. Make it visually cleaner and more authentic. Use the correctly spelled lowercase word "yokocho" as the main readable lettering. Remove the decorative stack of white circles and avoid invented symbols or random typography. Keep the sign elegant, simple and integrated into the timber architecture. 3. REFINE ARCHITECTURAL PROPORTIONS: Slightly reduce the visual dominance of the large wooden entrance gateway and allow more of the restaurant corridor to be visible. Keep the wooden slatted ceiling, polished stone floor and storefronts as important visual elements. Make the underground space feel like a continuous, welcoming commercial dining district rather than a monumental building entrance. Keep the ground-level cross-section visually clear and avoid unnecessary or confusing additional staircases. PRESERVE THE ORIGINAL ART DIRECTION: 1950s–1960s Mid-Century Modern graphic design, vintage silkscreen printing, linocut and Japanese woodblock print aesthetics. Strong black outlines, crisp angular architectural details, bold flat color areas, dramatic graphic shadows, expressive geometric patterns and subtle distressed ink texture. Maintain the beautiful contrast between the cool monochromatic city above and the warm ochre, burnt orange, walnut brown and ivory underground. Preserve the black-and-white abstract rays and geometric negative-space patterns around the composition. Keep the result sophisticated, warm, architectural and visually balanced. Do not introduce photorealism, 3D rendering, gradients, excessive decorative details or unrelated text. The final image should retain the artistic quality and visual impact of the original while improving the authenticity of the actual Marunouchi dining environment.