To answer the first question, I've absolutely no idea what the K stands for. As for whether the second part of the name of this site is true? I can confirm that for you right now!
K Erotic is one of those sites that succeeds in the difficult soft porn genre because it has the secret ingredient: Absolutely stunning models. K Erotic rounds up some of the most beautiful women from around the K site world (such as K Scans) and presents them in a softer, more erotic selection of high quality videos and images. And when I say high quality I mean high quality - some of the very best I've seen around. Be warned though, the pictures are absolutely enormous so they might take a little longer to download than you'd expect (but they are worth waiting for!)
There are some layout issues here though - I kept finding myself leaving the members area by accident just by clicking on various links and it took me a while to work out that the menu bar at the top should be avoided once inside the site. It's also a recent edition to the K site family so the archives are still a little sparse but with weekly updates this will soon change. Membership will cost you around $30/£17 for 30 days, or you can opt for the $50/£29 90 day avenue. If you're looking for the soft touch then a trip to K Erotic might be the option for you!