I remember reading a book ages ago that I really enjoyed. Unfortunately, I can't remember the title/author/etc. Any help in figuring this out is appreciated! The story revolved around 2 men (friends/brothers?) who somehow got from our world to a fantasy world. Thing is, these 2 guys were expert martial artists and used their skills to help them survive in the fantasy world. One scene that sticks out is one guy getting attacked by an evil unicorn (yes, evil) and he chops of the unicorn's horn and beats it. (Yes, I know this is all completely random sounding). The only other thing I seem to remember is that the two guys were maybe pitted against each other, or became enemies? Not sure on that though. So.... any ideas? Thanks, all.