Octopath COTC GEP Efficiently farming Light Crystals to learn new skills (3T boss kills)

The new Ouma region in Side Solistia has bosses that drop Light Crystals. We need those materials to upgrade skills. The core strategy revolves around one party that clears mobs efficiently while another party beats the boss with 4 flex slots for units we need to farm. 00:00 Intro - why farm Light Crystals 00:45 Explaining the 2 parties 01:39 Navigating the Ouma Dungeon 03:55 Boss Fight 1 05:50 Finish collecting items 07:10 Mob fight 09:45 Boss Fight 2 12:25 Team and loadout