A vibrant 3D render of a sale discount banner with a bright red background, designed for Rakuten. The banner should feature the large, bold Japanese text "SUPER SALE" as the central element. Surrounding the text, include festive elements like colorful balloons floating and confetti falling to create a lively and celebratory atmosphere. The design should be dynamic and eye-catching, suitable for use in a flyer or poster with a 16:9 aspect ratio.