Maruki's Palace

Persona 5 Royal guide · Strategy for the final dungeon

This Palace serves as the final infiltration mission exclusive to the third semester, located inside an idyllic, psychological research laboratory. Joker, Akechi, and Sumire join forces with the rest of the Phantom Thieves to secure an infiltration route and steal the treasure. Players must navigate psychological questionnaires, light-refracting cable puzzles, and high-level Shadow encounters to confront Takuto Maruki.

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True Ending | You must reject all of Maruki's offers to accept his false reality on both January 9 and February 2 to remain on the path to the true ending

Deadlines

February 2 | Send the calling card and steal Maruki's treasure to prevent his altered reality from becoming permanent

Social links

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Faith (Sumire Yoshizawa): Reach rank 5 before the third semester to unlock ranks 6 through 10, then hang out with her during daytime free slots in January

Worth doing

Spend daytime slots speaking with Phantom Thief teammates who have maxed Confidants to awaken their powerful third-tier Personas

Items

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Melancholy Seed (Red): Inside the laboratory monitor room, reach the upper platforms using the grappling hookMelancholy Seed (Green): In the research facilities, climb down into a hidden vent system near the quiz chambersMelancholy Seed (Blue): In the twilight corridor area behind a locked door guarded by an elite Shadow

Secrets

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Crystal of Melancholy | Collect all three Will Seeds and take the resulting accessory to Jose in Mementos to upgrade it into the Ring of Melancholy

Enemies

Fafnir

Weak to Ice, Nuke

Repels Physical and Gun while absorbing Fire; use Ice or Nuclear to down it

Byakhee

Weak to Ice, Nuke

Often encountered in the upper lab areas and weak to Ice and Nuclear attacks

Hastur

High-level Shadow with no elemental weaknesses that resists most magic and casts severe Wind spells

Shops and people

Jose: Sells recovery items and upgrades the Palace's Will Seed accessory in exchange for flowers and stamps in Mementos

Tips

Equip accessories or Personas that resist or nullify Bless and Curse skills, as late-palace mini-bosses and the ruler heavily rely on these elements.
Take advantage of Baton Pass chains during the final boss fight to eliminate Maruki's tentacles before targeting Azathoth and Maruki directly.

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Mementos

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