Mr. Shin
You don't have to use mouse to type with Unionway.
(As a matter of fact, I didn't even know that you could use mouse to input with Unionway.)
All you need to do is just use your qwerty keyboard as if they have Korean characters. If you don't remember which key corresponds to what, just go down from the upper left corner like "q w e r t ..." and see Unionway put "げ じ ぇ ぁ ぁ ...". Then do another one with shift key pressed. That will print "こ す え あ ざ ...". Print that and paste it on your computer (preferably on the side of your monitor, not on the display ^_^). Lose the mouse. Have fun.
Oh, by the way, it would help you heard better if you don't cuss.