Currently there is no info on ability to transfer to JP server as it is handled by different publisher.
While it is going to end there will be something that should help you to to explore all game content:
We will provide details on upcoming sunset activities soon, but wanted to alert you of the sunset now so you could maximize your experiences during the remaining time left in the game.
For current Wizardry Online members, we will be upgrading your membership to SOE’s new All Access membership. Under this new All Access plan, you will be able to continue to enjoy membership benefits in Wizardry Online until it sunsets, in addition to having top tier access in SOE’s other membership games.