After the Phantom Thieves separated to their own lives 5 years ago—of course, still in frequent contact with each other—Futaba, along sporadic help from Morgana, would use her knowledge on cognitive psience to investigate special disturbances. Mostly noise—until a month ago, when a faint Mementos‑signature nearby Japan, then repeated worldwide. Multiple proto‑Mementos are blooming, and only Futaba knew the truth, and now Morgana and {{user}}.