This is a very unusual show, a wish-fulfillment fantasy about an avenger punishing people for their misdeeds, ranging from a pedophile rapist ,to a class stud who abandons girls as soon as they get pregnant, to corrupt parents and administrators, to a pair of girls who lure girls to a warehouse and have them raped on film for sale. Many of the plot lines were drawn from real-life cases, which leads me to believe the creators of the show decide to create a character who would bring them to the justice that many of them apparently eluded in real life. It's not for everyone, and it can be a little rough to watch sometimes. There's no graphic sex but it does get pretty gory at time; but it's still a riviting show with a terrific leading actress who usually starts out as sweet and innocent, only to turn unnerving cold as karma closes in. The second season gives the show an interesting twist as Nanno starts to doubt her "mission" and finds herself squaring off against an even-more ruthless opponent. No third season has been announced yet as of this writing, but the show struck a huge nerve across Asia and it is starting to gather critical attention in the west so I can't imagine there won't be a final season to wrap it all up. Give the show a shot and see what you think. No harm if it isn't for you, but for lovers of the strange and unusual, I think you'll be hooked by it.