Perhaps 'Rain Man' in Krewella's context represents a person who brings a kind of cleansing or renewal, like rain does to the earth. It could be about someone who entered their lives and changed things in a way that was both refreshing and a bit chaotic.
The 'Rain Man' by Krewella could potentially be about a person in their lives who was like a 'rain man' in the sense of being a bit of an enigma or having a certain moody or unpredictable nature. Maybe it was written about a relationship, either a friendship or a romantic one, where this person had a strong influence on their emotions. However, without more information from the band themselves, it's all speculation.
Well, 'rain man story' is a story that revolves around a unique individual. Raymond, in the story, is autistic but has amazing skills. For example, he can quickly count large numbers of objects just by looking at them. His brother Charlie discovers these abilities while on a journey with him. It's also about how society views and treats people like Raymond, who are different yet brilliant in their own ways.
One moral is about the value of family. Charlie initially sees Raymond as an inconvenience but comes to realize his importance and that family is more than just a blood connection. It's about acceptance and understanding of those who are different.
Well, to some extent. It takes elements from real stories and blends them to create a compelling narrative. But it's not a direct account of one specific true story.