Spoiler?? . . . . . . To be fair, I think it's okay that Kyungsoo didn't meet Chowoon after he overdosed himself because if he did then Chowoon might take that as if Kyungsoo will never leave him if he threatens to kill himself. Yes, Chowoon didn't think like that but you can never say because he isn't exactly mentally well. Kyungsoo wanted Chowoon to reflect on his actions and be better, and overdosing isn't the right way to do that, that's why he didn't tolerate Chowoon and didn't visit him.
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To be fair, I think it's okay that Kyungsoo didn't meet Chowoon after he overdosed himself because if he did then Chowoon might take that as if Kyungsoo will never leave him if he threatens to kill himself. Yes, Chowoon didn't think like that but you can never say because he isn't exactly mentally well. Kyungsoo wanted Chowoon to reflect on his actions and be better, and overdosing isn't the right way to do that, that's why he didn't tolerate Chowoon and didn't visit him.