Luscious is a hentai picture sharing site, which isn't that apparant when you first load the page. You'll need to scroll down to get to the immediate content and you'll see big thumbnails of different hentai images. Click on one of these and it enlarges into a bigger view which you can save to your hard drive.
This site appears to be a community of hentai and manga lovers, where you can comment on images, and even upload your own collection. Popular tags are shown on the left hand side of the page, where you can choose what previous people have searched for. You can even search for your own choices by using the search box near the top of the page.
Apart from Hentai images, there isn't much else here. So if it's not your thing, you might want to look elsewhere. If Manga is your thing, however you can save a whole load of images to your collection, all for free.