All Military, Diplomatic, and Judiciary powers fall under the emperor.
The Imperial Congress consists of 501 members, each one representing a single corporate entity or wealthy family(more than 50,000,000 TZc in assets).
All congressmen are elected via shareholder elections(Corporate) or are appointed by the head of family(Plutocrats).
The congress has control of creating, modifying, and voting to effect all laws(though final veto lay with the emperor).
The Imperial Senate consists of 100 members elected via party listing. The Senate's role is mostly to confirm things or deny them and send them back. Such things include confirming High Court nominees, electing the Imperial Chancellor, ratifying treaties, voting on the budget, and calling for early elections if the government is being unproductive.
High court members appointed by emperor. Decide on all acts of government as being legal or not by basic constitutional law. Can strike down laws, and generally has the final say in all matters.