Anime-style concept art showing a small survivor group camped in an overgrown subway tunnel. Scene includes an older bearded man with improvised armor, a young girl checking supplies, and two other survivors around a makeshift fire. Bioluminescent moss and vines cover the walls, shafts of light from grates above, zombies lurking in the shadows. Moody green-blue palette, gritty textures, cinematic volumetric lighting, detailed environment storytelling, concept art, 16:9, high resolution, no text or logos.