This question was a little vague because the male lead was not a billionaire at first, but a beggar abandoned by his girlfriend. However, according to the description of the male protagonist becoming a billionaire, this plot could exist in novels, comics, animations, movies, and other works. In some novels or comics, there might be a protagonist who started out as a beggar or a poor person but eventually became a successful billionaire through hard work. This kind of plot usually attracts the attention and interest of readers or audiences and may be adapted into works such as animations or movies. However, it should be noted that this kind of plot is not universal, nor does it mean that all novels or comics contain such a plot.