Obtain all other trophies.
Spend CP to completely fill all Crystal Customization spots.
Clear the story after saving both Jupiel and Ariael.
Clear the The 3 Girls story.
Clear the story after choosing to save Ariael.
Clear the story after choosing to save Jupiel.
Boost your weapon to +99 using Item Boost.
Boost your armor to +99 using Item Boost.
Use Item Boost for the first time.
Spend CP for the first time.
Deitize for the first time.
Make the final ultimate choice.
