Hi, so I was going through 天気の子 (Weathering With You) and at the beginning of the movie he says
あの日見たことは全部夢だったんじゃないかと今では思う
でも夢じゃない
I pretty much know what’s being said here based on the context of the movie, but I’m confused with 夢だったんじゃない because I can’t really figure out what it means. If anyone can help me out here that’d be great, thanks.