By: Mark Barber Those unfamiliar with the intensity and insanity of Sion Sono’s films might be understandably overwhelmed by the excessively violent Tag, one of six films that the Japanese filmmaker has made this year (Love & Peace is also playing at Toronto After Dark, and his fantastic and unconventional sci-fi drama The Whispering Star played at TIFF last month). Others, however, will find Tag to be yet another exhilarating action-packed outing from Sono. Narrative-wise,…