It is theoretically illegal to use QQ Music to download songs for free in Japan.

Listening to music and watching movies in Japan cost money. This is a matter of copyright protection. QQ Music is free music and cannot be used in Japan. If you download Chinese songs, and the police want to prosecute you using copyright law, they must verify and verify with the domestic music distribution agency. In order to prosecute you alone, it is a waste of Japanese government public funds. The Japanese police agency will not do such a thing. Besides, a search warrant is required to enter your home and computer, and a judge will not issue a search warrant for such a thing.