Persona 5 The Phantom X Castle in the Void: Complete Walkthrough
Castle in the Void is the Kamoshida-themed collab Palace in the Crossroads of Fate event, culminating in the Raga (Shadow Kamoshida) boss fight. This guide summarizes the key steps, puzzle solutions, collectibles, and boss tips so you can clear it smoothly without replaying stages unnecessarily.
How to Unlock Castle in the Void
- Castle in the Void is part of the Crossroads of Fate – Castle Arc collab; you unlock the Palace once you reach Stage 1‑14 of the event quest line.
- Raga (Shadow Kamoshida) is the Palace boss listed under Castle in the Void in the in-game boss index.
Early Floors: Keys, Hidden Rooms, and Volleyballs
Much of Castle in the Void copies Kamoshida’s Castle structure: multiple keys, hidden rooms, and Volleyball collectibles.
Key early-stage patterns:
- Follow the waypoint, but always check side rooms and shelves for keys and Volleyballs.
- Typical objective chains:
- Many Volleyballs are placed on shelves, boxes, and altars; watch for item “sparkles” in side rooms and corridors before following the waypoint to the next area.
When a pull ring blocks your way:
- Pulling a wall ring often lowers or raises gates in another hallway; if you get blocked, backtrack and check the opposite corridor or newly opened door.
Central Tower & Box / Baseball Puzzles
In the Central Tower sections, you need to gather three Volleyballs/Baseballs to stop blade traps and progress.
Highlights:
- Paths can be blocked as floors rise; drop down to lower levels, grab Volleyballs on crates/tables, and use the Safe Room at the base for checkpoints.
- After opening a side door, use bookshelves and exterior ledges to climb outside and circle around the tower; more Volleyballs sit on boxes along the outer wall path.
- Inside the “box puzzle” room:
Collect all three balls, return to the mechanism, and slot them in to safely proceed further up the tower.
Past Wisdom / East Building Annex Puzzle
In the Old Castle – East Building Annex segment (often labeled “Past Wisdom”), you again combine keys, rings, and Volleyballs.
Key steps:
- Go to the bottom of the spiral staircase; defeat the tough enemy guarding a chest.
- In the right-hand rooms, pull rings to toggle gates and grab Volleyballs from bookshelves; one room hides the Castle Room Key on a shelf near a ring.
- Use the Castle Room Key on the previously locked door; check the left wall shelf for a hidden button to reveal additional treasure.
- In the final annex room, pick up the Volleyball on the altar, then:
This area is easy to miss chests in, so check shelves and backtracking paths after each ring pull.
Event Mission Condition: Gun-Finish Requirement
One Castle in the Void mission includes a special condition: defeat the last two opponents with Gun attacks.
- Gun basic attacks count; Gun skills do not.
- Both final enemies must die to gunfire in the same turn; if you fail, reset before the battle ends to restart from the nearest Safe Room and try again.
Save before that mission and weaken the last enemies with skills before finishing with gunfire.
Final Boss: Raga (Shadow Kamoshida)
Raga is the Castle in the Void boss, listed as the event’s Sinner of Lust variant of Shadow Kamoshida.
General strategy (based on community clears):
- Bring a healer Wonder and strong single-target DPS (e.g., Soy, Closer, Joker or other top damage dealers).
- Focus on breaking Raga’s shield quickly; once the shield is down, burst with your strongest elemental weaknesses and All-Out style attacks before it recovers.
- Keep buffs and debuffs up (Atk up/Def down, or Atk down on the boss) and guard before big telegraphed hits.
Reaching the recommended level, upgrading gear and Personas in advance, and ensuring full elemental coverage will make the fight manageable.
For full chest maps and step-by-step floor diagrams, pair this overview with a dedicated floor-by-floor guide such as Game8’s Castle in the Void Palace walkthrough.
