How is it unfortunate? Korean might have some features that sound familiar to a Japanese speaker -- e.g. word order and morphology of Sinitic vocabulary -- but

How is it unfortunate? Korean might have some features that sound familiar to a Japanese speaker -- e.g. word order and morphology of Sinitic vocabulary -- but phonology is quite challenging and non-Sinitic vocabulary is completely different. Overall it's far, far harder than Esperanto for Japanese speakers.