This may imply that the government has designated Tokyo as the capital of Japan, although (again) it is not explicitly stated, and the definition of the "capital area" is purposely restricted to the terms of that specific law.
This may imply that the government has designated Tokyo as the capital of Japan, although (again) it is not explicitly stated but it does not rule out Kyoto as being the capital (as it could be any outlying region). The definition of the "capital area" is purposely restricted to the terms of that specific law.