I must start out by saying that "Dead Sushi" ("Deddo Sushi") is not a movie that will appeal just to anyone. Why? Well, because this movie is very odd, unique and special, it is extreme to the point where it becomes hilarious and ridiculous. But it works out so well, because this Japanese horror/comedy really is good entertainment and a great laugh.
In this movie you will find flying sushi, man-eating sushi, sushi nunchaku, a man-tuna, rice-zombies, and other equally bizarre things. The outrageousness of it all is what makes the movie work out so well. The dialogue is equally outrageous, but funny at the same time.
The story in "Dead Sushi" is about a Keiko who flees the hard tutoring of her father in the ways of sushi making and martial arts. She runs away from home and ends up taking a job at an old inn run by a married couple. A group of visitors come to stay at the inn, but they carry a secret with them, and once unleashed, the sushi comes to life to wreck havoc on the humans. This time people becomes the food...
This particular genre of comedy/horror movies is unique to Japan, and you either love it or hate it - you either get it or you don't. As with other movies in the similar genre, "Samurai Princess", "RoboGeisha", "Tokyo Gore Police", etc. then you are in for extremities in abundance. If you enjoy this particular genre of movies, then "Dead Sushi" is definitely well worth checking out.
And with similar movies, you know what kind of acting you are getting right from the very start. It is not award-winning performances, of course, but still, good enough all-round performances and action.