A new Jail unwittingly created by Akane Hasegawa when she absentmindedly called someone to "save her" because she realized that her father, Zenkichi Hasegawa, was arrested by Miyako Kaburagi for preventing the Phantom Thieves' arrest, leading to EMMA responding to Akane on her own volition. Shortly after the Jail's creation, the real Akane, unbeknownst to anyone else, falls into a coma and Konoe tells EMMA to turn Akane into a Monarch and fabricate a distress call from her per EMMA's proposal. EMMA does not tell Konoe anything about Akane and he just went by her decision. The Phantom Thieves were baited to the Kyoto Shrine by a fabricated distress call and when Ryuji says "Phantom Thieves," they were all dragged into the newly formed Jail, where they try to save Akane, which seems to be bound on a pillar. In reality, that was not Akane, but Shadow Akane, who reveals herself to be hostile as the newly appointed Monarch of Kyoto, and her general behavior matching Akira Konoe's instead of herself. Her resentment against Zenkichi assisting them causes her to trap the Phantom Thieves with a cage in hopes of changing their hearts. Futaba trips and manages to escape, and Sae Niijima releases Zenkichi from interrogation just in time.
With Zenkichi and Futaba freed and Futaba having no combat abilities, Zenkichi is required to sneak past hordes of Shadows. Due to Zenkichi not being awakened to a Persona, a Shadow spotting him will result in a Game Over. Once reaching to the place where Akane was in, she reveals that Jyun Owada killed her mother (and Zenkichi's wife) and chastises him for being an evildoer because he let himself get blackmailed by Masayoshi Shido, who Owada was an associate of. She wanted to change the Phantom Thieves' hearts before changing her mother's killer's heart, completely unaware that these are all Konoe's plans instead of hers. She also expresses more concern about the patsy secretary who Owada put the blame on than her mother and absolutely cannot be reasoned with. In a bid to save his daughter, Zenkichi then awakens his Persona, Valjean, making him the new 10th member of the Phantom Thieves. He defeats Akane's Shadows, and this Shadow Akane was revealed to be a decoy. There's no Bird Cage or Trauma Cell for Akane; instead, she awaits for the party at the deepest level of the Jail.
In order to reach Akane, the party must solve a puzzle involving praying to two fox statues separated from each other. Not all areas of the Jail are initially accessible, and the protagonist must pray to certain shrines to open new paths to the Father Fox Shrine and Mother Fox Shrine. As soon as they reach one of the statues, they must defeat a mini boss; after this mini-boss is defeated, they must find a way to the other statue. Once the Father and Mother Foxes have been reunited, a path leading straight to Shadow Akane opens.
The party reaches the end of the Kyoto Jail and encounters Shadow Akane, who has been rambling about how the Phantom Thieves are fakes and she will change their hearts before going after Owada. She sends out false copies of the Phantom Thieves to attack. While copies of the main eight Phantom Thieves appear, only Joker's copy has to be fought and the protagonist has to fight it alone. Once this fight is over, Shadow Akane genuinely considers Zenkichi a good parent and vanishes (causing Zenkichi to briefly panic, not realizing that Shadows dissipate when merging with their real selves and initially believing her dead). After the party leaves the Jail, Akane regains consciousness in her room and takes the first steps towards forgiving her father.
|Chief's Cutlass||Morgana weapon||Treasure chest - Path of Harmony|
|Bear Gloves S||Makoto weapon||Lock Lv 2 Treasure chest - Parental Square|
|Tempest Slash||Skill Card||Treasure chest - Ippen St.|
|Lifeless Slayer||Zenkichi weapon||Lock Lv 3 Treasure chest - Shrine Gate Corridor|
Updated gear once the Kyoto Jail becomes available.
|Demon Pipe||Ryuji||154||St +2||Complete request, "Shocking the Scum"|
|Chief's Cutlass||Morgana||148||En +2||Treasure chest - Path of Harmony|
|Bear Gloves S||Makoto||154||+Critical up (low)||Lock Lv 2 Treasure chest - Parental Square|
|Flamberge||Zenkichi||142||+Null Burn||Sophia's Shop, Kyoto (¥11,400)|
|Zanyouto||Zenkichi||150||-||Sophia's Shop (¥13,200)|
|Hacker Gear Mk. 4||Futaba||204||+50 HP||Complete request, "Junk Collection, Part 4"|
|Stamina Sash||+20 HP||Sophia's Shop, Kyoto (¥8,000)|
|Mind Choker||+20 SP||Sophia's Shop, Kyoto (¥8,000)|
|Muscle Anklet||St +2||Sophia's Shop, Kyoto (¥8,000)|
|Witch Amulet||Ma +2||Sophia's Shop, Kyoto (¥8,000)|
|Fortress Belt||En +2||Sophia's Shop, Kyoto (¥8,000)|
|Wing Socks||Ag +2||Sophia's Shop, Kyoto (¥8,000)|
|Zodiac Charm||Lu +2||Sophia's Shop, Kyoto (¥8,000)|
|Alluring Sticker||+ST gauge rate up (low)||Sophia's Shop, Kyoto (¥8,000)|
- Brilliant Dragonslayer (Required to be defeated in order to unlock its fusion)
- Sun’s Emissary (Dire)
- The Jail's theme, "Counterfeit Phantom", incorporates riffs from "Wake Up, Get Up, Get Out There" and "Life Will Change", alluding to Akane's idolization of the Phantom Thieves.