I find Demon Matsuri easier than Empress Supreme. As long as I have the damage to clear all adds in the same turn they're summoned, there won't be any problem.

Requirements:

• Fire resistance - the whole party must have 100% fire resistance (with buffs) to negate the damage of Infernal Possession (fire magic damage and fire magic DoT).
• Provoke tank - high physical eHP with some SPR and 100% petrify resistance.
• Source of mitigation - high general mitigation (40% or more) and physical mitigation. This is important for the provoke tank.
• AOE def/spr breaker - must be able to apply breaks every turn.
• Fire damage - any source of fire damage that can be used every turn.

My teams

Note: Using AR chaining when Tsukumogami starts spamming Paper Oni-chan, my game starts lagging. This actually helped me more because I was able to consistently spark AR chains.

Team 1 - Youtube

FFBE Equip

• CG Charlotte - Passive provoke, 50% general mitigation
• Beatrix - def/spr AOE breaker with fire weapon
• Myra - buffer, support, healer, 70% fire res buff
• Tsukiko - AOE water chainer
• Circe - AOE water chainer

Team 2 - Youtube

FFBE Equip

• Demon Rain - Provoke tank. His provoke skill has 50% general mitigation self buff when enhanced.
• Sephiroth(KH) - AOE water chainer
• Elena - AOE water chainer
• Summer Fina & Lid 2018 - AOE breaker
• CG Fina - healer with Flame Whip for Firaja

Team 3 - Youtube

FFBE Equip

• Wilhelm - Provoke tank. His provoke skill has 40% general mitigation self buff when enhanced.
• Lorraine - AOE breaker with fire weapon
• Rena - healer and buffer
• Esther - AOE water chainer
• Malphasie - AOE water chainer

Team 4 - Youtube

FFBE Equip - I failed to OBAMA with this team, missed the 5 LB mission. I only noticed after I've already uploaded on youtube. :(

• Awakened Rain - Provoke tank. His provoke skill has 40% general mitigation self buff when enhanced.
• Kryla - AOE breaker with fire magic damage. Has 50% fire res buff.
• CG Nichol - buffer with some heals
• Summer Folka & Citra - AOE water chainer with some heals
• Godrea - AOE water chainer

Team 5 - Youtube

FFBE Equip

• White Knight Noel - Provoke tank. His provoke skill has 50% physical/magic mitigation self buff when enhanced.
• CG Lid - AOE breaker with fire weapon
• Zargabaath - Buffer, healer. Has 40% and 50% general mitigation.
• Ellesperis - AOE water chainer
• Karten - AOE water chainer