The poster depicts Tanjiro Kamado, the main protagonist of Demon Slayer, harnessing the powers of both fire and water. He is shown with his two swords, the black Nichirin Blade and the white Nichirin Blade, crossed in front of him, ready for battle. Flames of red and orange surround him on one side, while water droplets in shades of blue and green surround him on the other side, representing his mastery of the Water Breathing and Flame Breathing techniques. The background is a mix of red and blue hues, further emphasizing the theme of fire and water. The title of the poster, "Harnessing the Power of Fire and Water," is written in bold letters at the bottom.