On Manga Entertainment’s release of the “Ninja Scroll: 10th Anniversary Edition” the studio has also included a small hidden feature.
To find it insert the DVD in your player and from the Main Menu go to the “Special Features” section. Once you get there press the “Left” arrow key on your remote control. This will highlight the Manga logo. Press the “Enter” key now and you will get access to the trailer of “Ninja Scroll.”