Celebrating 20 years of Ninja High School! Rhonda was an ordinary student until she discovered the Departure Memo, a notebook dropped by the Grim Reaper which sadly lacks anything useful within it. The memo granted Rhonda an oversized sword and forced her to use its inane powers to fight injustice. Now she must battle spirits no one else can see, worry about a persistent detective who is certain she is a criminal, and deal with an invisible, perverted demon that follows her everywhere, even in the shower!