Have been ordering meats from Famu for at least 5, 6 years. Found in J-Town, it's a Japanese butcher (probably the only one found in the city); both owners are very familiar with meats and are always available to answer any questions that you might have. It's also extremely clean!
You can find a number of meats in different forms; we always purchase ground chicken, pork, and beef as it's always fresh. I would also recommend their prepared stuff. I always have a pack of the premade hamburgers in the freezer as it comes in handy on the nights that you don't want to cook. Additionally, their take away lunch sets are pretty good as well. For a reasonable price,you can have a chicken katsu or curry rice meal.
Good for: meats, premade meals