COSM-GAME
Persona5: The Phantom X 4.9 Adds Cosmic Yui
Persona5: The Phantom X released Ver. 4.9 on September 9, 2026 after SEGA published the update details on September 8. The update adds 5-Star Phantom Idol Cosmic Yui, continues Chapter 4 with The Masks We Wear: Phase 3 and opens new areas in both the Palace and Mementos. New events, Velvet Trials stages, exchange rewards, Revelation Cards and progression updates also arrive with the version.
Game summary
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Ver. 4.9 Adds Character, Story and Progression Content
Ver. 4.9 released on September 9 with several major additions arriving together. Cosmic Yui joins the Phantom Idol roster, Chapter 4 continues into Phase 3, new Palace and Mementos areas open and multiple event and progression systems receive new content.
| Ver. 4.9 addition | Content |
|---|---|
| New Phantom Idol | Cosmic Yui |
| Main Story | The Masks We Wear: Phase 3 |
| Exploration | New Palace and Mementos areas |
| Event | Harvest World: Cosmic Calamity |
| Challenge | Shadow Hunt |
| Velvet Trials | Stages 26 through 30 |
| Thieves Den | Maximum level increases to 70 |
| Joy Medal Exchange | Event Horizon and Event Horizon Shards |
Cosmic Yui Joins Through Plantastic Planet Protectors
Cosmic Yui is the new 5-Star Phantom Idol for Ver. 4.9. Her code name is Bui, and Chika Anzai provides her Japanese voice.
| Cosmic Yui detail | Value |
|---|---|
| Quality | 5-Star Phantom Idol |
| Name | Cosmic Yui |
| Code name | Bui |
| Japanese voice | Chika Anzai |
| Contract | Plantastic Planet Protectors |
| Start | September 9 |
| End | October 15 at 01:59 UTC |
Plantastic Planet Protectors is the Most Wanted Phantom Idol Contract connected to Cosmic Yui's release. The opened official material confirms her identity and Contract timing but does not provide a complete publishable list of named combat skills, so no unsupported skill values are added here.
Chapter 4 Continues with The Masks We Wear: Phase 3
The main story advances with The Masks We Wear: Phase 3. The update opens additional sections of the current Palace while also expanding Mementos with new areas.
The Ver. 4.9 story material places more attention on Shimotsuna's Palace and his past. The story also continues Daichi Osaka's situation as Shoki moves to help him.
A Phase 3 Release Event accompanies the story update and remains available through October 15 at 01:59 UTC.
Harvest World and Shadow Hunt Add New Activities
Harvest World: Cosmic Calamity is one of the central Ver. 4.9 events and runs through October 15 at 01:59 UTC.
Shadow Hunt also continues through October 15 and connects directly to the new Palace and Mementos content by displaying Strong Enemies found in those areas.
| Activity | End | Key content |
|---|---|---|
| Cosmic Yui Contract | October 15 at 01:59 UTC | Plantastic Planet Protectors |
| Phase 3 Release Event | October 15 at 01:59 UTC | Chapter 4 Phase 3 rewards |
| Harvest World: Cosmic Calamity | October 15 at 01:59 UTC | Ver. 4.9 event content |
| Shadow Hunt | October 15 at 01:59 UTC | Strong Enemy challenges |
Shadow Hunt can also unlock the Path of Kaitul without requiring every preceding Mementos area to be completed first.
Velvet Trials Expands with Stages 26 Through 30
Ver. 4.9 adds Stages 26 through 30 to several Velvet Trials categories.
- Lair of Arcane Flame.
- Nuclear Winter.
- Thunderous Blessing.
- An Ill Wind.
Cumulative star milestones provide Meta Jewel rewards for the newly added stages. These stages do not provide Stardust Shard rewards.
Exchange Shops Receive New Weapons and Skill Cards
The Joy Medal Exchange adds Event Horizon, an exclusive weapon for Wonder, together with Event Horizon Shards.
Repression Medal IV also receives additional Skill Cards:
- Cohesion.
- Accuracy Boost V.
- Marakunda.
- Phys Boost V.
- Attack Boost V.
- Battle Acumen V.
The Salamander Coin Exchange adds Artisan's Mod Orders and selected limited 5-Star weapons, including a weapon for Ren Amamiya. The listed limited weapons cost 20 Salamander Coins each.
Thieves Den and Phantom Pass Progression Expand
The Thieves Den maximum level rises from 60 to 70. Persona 3 Reload collaboration items and music are also added to the available Thieves Den content.
The update introduces new Revelation Cards and adds a new Synergy Story for Musubi Matsukata. The Phantom Pass also receives a new cycle, with the previous Pass EXP and level resetting as the September 9 update begins.
The current Phantom Pass period continues through October 29 at 01:59 UTC. New Crane Game plushies remain available for a longer window through November 12 at 01:59 UTC.
Login Rewards Run Through September 23
The Ver. 4.9 Login Bonus remains available through September 23 at 21:59 UTC. Logging in for seven days provides a total of seven Platinum Tickets.
The official Ver. 4.9 campaign also provides Meta Jewel rewards connected with the update and its broadcast. These launch rewards use their own claim deadline, so they should be collected separately from the October event windows.
Note: Ver. 4.9 contains several different deadlines. Cosmic Yui and the main October events end on October 15 at 01:59 UTC, while login rewards and later progression content use separate end times.
Trailer, screenshots, and media
FAQ
8 questionsVer. 4.9 released on September 9, 2026 after the scheduled update maintenance.
Cosmic Yui is a new 5-Star Phantom Idol introduced in Ver. 4.9. Her code name is Bui, and her Japanese voice actor is Chika Anzai.
Her Most Wanted Phantom Idol Contract is Plantastic Planet Protectors. It begins September 9 and remains available through October 15 at 01:59 UTC.
The update adds Main Story Chapter 4: The Masks We Wear: Phase 3 and opens new areas in both the Palace and Mementos.
The Phase 3 Release Event runs through October 15 at 01:59 UTC.
Harvest World: Cosmic Calamity is a new Ver. 4.9 event running through October 15 at 01:59 UTC.
The Thieves Den maximum level increases from 60 to 70, and additional Persona 3 Reload collaboration items and music become available.
The Joy Medal Exchange adds Wonder's exclusive weapon Event Horizon and Event Horizon Shards.