Increasingly, Japanese people included more meat, coffee, chocolate and bread into their diets. At the end of World War II, American culture arrived in full, driving increased demand for Western food and especially fast-food.
Now, Japanese fusion is globally celebrated, including Japanese-Peruvian fusion, Japanese-Italian, and Japanese-Mexican (think sushi burritos). In Japan, many fast-food chains prevalent in the West (like KFC) are becoming more and more popular. Even traditionally Japanese foods such as ramen focus their business model on fast-food, as opposed to the slow and methodical style of traditional tea houses and other restaurants.