Has anyone taken the ferry from Osaka to Busan

Hi everyone – I’m in the midst of planning an October trip to Japan and South Korea. I’ve been once before so this is our second visit. Last time we flew from Seoul to Tokyo. This time we’re doing Japan first and are considering taking the overnight (19hr) ferry from Osaka to Busan since both cities are on our list but there’s no direct or easy flight between them.

Has anyone else taken this ferry or heard much about it??

Thanks!