4K HD Wallpaper: Kill la Kill (Anime TV Series)
'IQRemix' took this photogrphy and from his courtesy can be downloaded under CC By-Sa license. Check at full size and see if you like it. Here's optimized for use in desktop backgrounds and homescreen phones.
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)