would you rather learn japanese or korean?

I'd rather focus on japanese since it's harder. Korean is pretty easy and you can learn it just by watching naturally(kpop,kdrama,etc.) I was actually shocked at how I have been watching anime for 6 years and only know the language 30% while I started watching korean for a nifty 4 years only and manage to grasp its language and writing system a lot without actually trying hard. Although this decision depends on you on what you choose.(づ￣ ³￣)づ