Item storage?

Is there any way to store items other than gold bars? Im worried that some valuable items will take up inventory space when I'm trying to do super boss fights that may not require those certain items. Namely Pokemon and the Galaxy star. 

Edit: Im also currently farming coins for frog/Galaxy converting, and all my important items make it annoying to sift through all the time.

Unfortunately, there's no item storage, just like vanilla.

Dang alright. Not sure what order to do things in then, do how many pokemon are in the game and catchable? That could take up a huge chunk of inventory.

Edit: think I figured out how the Pokemon work.