I usually pronounce it as a Z, but if there's a Z nearby I like to make it sound cooler with a quick kz sound. So it's
But not a hard K! Most 'hard' consonants refer to messing up while being recorded on a microphone... But a hard K is like... Well try to breathe as little as possible after the k, you might have a tendency to make a sort of breathey k(ah)zeezee so it's tricky...
Anyway... This strip is awesome for FF7 strategy, ain't it? Mug always pissed me off... I think it might have a slighty higher success rate... But dang it would be cool if you could pick between steal and mug when you got mug.