Butagumi ( 2-24-9 Nishiazabu, Minato, Tokyo 106-0031, tel. +81 3-5466-6775 ), a tonkatsu paradise 5 minutes walk off the main Roppongi road, is where all the best pigs of Japan go when they die. Think of a double-sided menu, all dedicated for pork fillets and sirloins from various Japanese regions. Good pork…