This isn't the opposite direction, copyright isn't really the focus of the Artificial Intelligence Act. Copyright and AI training is covered in the EU Copyright Directive 2019/790, and is very similar to the Japanese law. The AI Act basically just reiterates that AI models have to disclose exactly what they were trained on, something already implied by CD 2019/790.
This isn't the opposite direction, copyright isn't really the focus of the Artificial Intelligence Act. Copyright and AI training is covered in the EU Copyright Directive 2019/790, and is very similar to the Japanese law. The AI Act basically just reiterates that AI models have to disclose exactly what they were trained on, something already implied by CD 2019/790.