Area 4 introduces more complex boss mechanics, including bosses with multiple health bars or damage reduction. Your team's overall power level and synergy become increasingly important. This is where you should start actively awakening your characters to their higher rarities (SSR to UR, UR to TUR) to unlock their full potential. Farming awakening medals from specific events will become necessary. The bosses here can hit hard, so defensive units and support items are crucial. Don't be afraid to retry stages if you fail, and adjust your team or item loadout accordingly.
