Ango Natsume transforms into Nightmare for his boss battle. This fight emphasizes exploiting weaknesses and managing multiple targets.
Phase 1: The Author's Block
Nightmare is initially weak to Fire and Nuclear. Ann (Panther) and Makoto (Queen) are excellent choices for this phase. Nightmare will summon 'Manuscript' Shadows that buff him or debuff your party. Prioritize taking these out quickly, as they are generally weak to various elements. Nightmare himself will use ranged magic attacks and occasionally a close-range physical attack. Keep moving and use Phantom Dash points to avoid his spells.
Phase 2: Literary Frenzy
As Nightmare takes damage, he will become more aggressive and summon more powerful Shadows. His weaknesses might change or become less pronounced. During this phase, he will often create a 'word barrier' around himself, making him temporarily invulnerable. You must destroy the surrounding 'word' objects (usually glowing red) to break the barrier and expose him to damage again. Continue to use your strongest elemental attacks and Showtime when available. Be mindful of your SP, as this can be a longer fight. Healing and buffing your party are crucial for survival.
Defeating Nightmare will secure Ango's Desire and conclude the Sendai Jail arc.