After clearing the final boss the game will ask you to save a Clear Data file, which will be indicated by a star on the save file. If you choose to load up the game Clear Data file you will be placed at Artorius’ Throne just before the final boss fight and can access the Post Game content.

Head to Ladylake’s Inn and rest for the skits Lailah’s Composure and The Skies Over the Journey’s End and then make your way to the Sanctuary in Ladylake for a scene to obtain Lailah’s “Primal Embrace” Mystic Arte.

You can now warp to the Elysia entrance and head to the exclamation point to obtain Mikleo’s “Rime Slaughter” Mystic Arte.