A character played by actor Chico Lourant drifts away on an advertising balloon in the final scene of “Black Sun”. For more about the film, see: Chico Lourant, the Black Sun of Shibuya チコ・ローラント, 渋谷黒い太陽

For more about ad balloons, see: Ad Balloons on the Ginza: Float, Young Advertisers! (1890-1989)