Technically, you will need to build a relationship with the copyright holders. If they approve your plan it is smooth sailing. If they don't, you are in for a world of hurt.

In western publishing the author often assigns the copyright to a publisher. At that point what they want ceases to be of any importance to your legal standing. I don't know Japanese business conventions though.

So in the abstract, better make sure you knows who holds the actual copyrights. The music trading business has lots of examples of the artist putting works up in P2P systems and the publisher harassing people for trading said music "illegally."