Active/unsolved leads:
-Ishino has been accused with the murder of Sato and Aomori and is currently in holding. Given her ties to Aomori and Fujiwara, and that she discovered Aomori's and Sato's bodies, more investigation into her is warranted. Early gossip indicates that she started spacing out during lessons after finding Sato's body and that Hamasaki recommended a doctor for her.
-Hana and Fujiwara were in a relationship and broke up shortly before the split-up investigations; Hana has said that he was cheating on her with/left her for Ishino, and that one of the two stole the team's medical records. Followup is required.
-The purpose of the medical records themselves has not yet been discovered. Given the rarity of threats outside of Paradise, they seem somewhat useless.
-Hamasaki is a possible candidate for Michael. However, there is little IC evidence of this as yet. One of the angels is definitely confirmed to be male.
-It has not yet been explained why Michael and the other angels continue to put the Persona-users into Paradise given the stunningly low success rate of this tactic--something that Raphael also remarked on.
-Raphael mentioned "other places" in Paradise besides dungeons; however, it cannot be found without the guidance of another of the angels, and they are aware of what happens throughout (the non-dungeon parts of, and possibly also the dungeon parts of) Paradise.

Plot/Miscellaneous:
-The angels' goal is to build "Millennium City", a place of perfect order, within Iburi. What this entails, as well as the precise consequences, are as yet unknown, but it is something to be avoided at all costs.
-The angels are specifically targeting Persona-users/people with the potential (technically identical sets at this time). Their existence threatens the construction/disrupts the order of Millennium City (q.v.).

Angels:
- There are at least four: Uriel (heavily hinted to be Fujiwara), Michael (the leader, definitely male outside), Gabriel (female, gentler, newer than the former two), and Raphael (Seiji).
- The angels themselves may or may not be separate entities from their "hosts"; Gabriel refers to her human form as "just a disguise", but Seiji interacts with his in Paradise and treats it as separate from himself. They have personal histories, but jumbled ones (see: Aoki/Mikio Miho; this is implied by Seiji to be a result of his recalcitrance).
- Given that they sought and received help from a Shadow, they appear to have no qualms with dealing with them (perhaps, given that Shadows are natives of Paradise, they may be natural allies--the law to Philemon's chaos?). They also have no problems with sticking to the letter rather than the spirit of the law, given that they took S!Maeko's help then planned to judge her for being a traitor.
- Angels themselves can have dungeons, or at the very least their hosts can, as shown by Seiji (although his Shadow never appeared; perhaps Raphael suppressed it, or took its place?). Whether Seiji went into Paradise voluntarily or not is up in the air, but he must have had enough emotional issues to create the dungeon in the first place.
- Seiji states that he is "technically" the first angel; his absence in the initial reveal is thus all the more unusual (this is likely because of Raphael's hesitation to harm the Persona-users).
- Seiji also implies that the other angels aren't doing particularly well at their jobs, either, whatever they might be.
-Raphael was killed in Paradise, pierced to the rock in Seiji's dungeon with a glowing spear; Seiji died at the same time, indicating a link in at least one direction. Angels apparently bleed, though their bodies are composed of light and eventually dissolve (much like the dungeons of dead people). A calla lily was left at his feet by the killer (Gabriel, due to the calla lily symbolism).

Dungeons:
- Dungeons are created when a person with major emotional issues enters Paradise, whether they do so of their own volition or someone/thing else forces them in. The dungeon immediately appears around the person, and if they have a Persona, it becomes their Shadow.
- People 'trapped' in Paradise are technically free to go, but the despair of losing their Persona, plus their being in the 'perfect' place for them (as determined by the parts of themselves they don't want to admit), makes them unwilling to go.
- Dungeons persist after the death of the person who created them (see: Aomori, Shingo), albeit in a "decaying" state (parts missing, white light shining through), with no indication that they naturally disappear. They are still enterable after clearing them out.
- One doesn't need to be a Persona-user to have a dungeon or a Shadow (see: Aomori).
- Some dungeons either require a key to enter initially, or have keys to facilitate them (see: Shingo, Seiji).
-Dungeon "decay" may also occur if the user has broken their bond with whatever keeps them safe in Paradise (angel, Persona, etc.) (see: Seiji). However, given that Persona-users lose their Persona temporarily when they are trapped in Paradise, this may not necessarily be the case.

Paradise:
- Paradise conforms to the expectations of the people entering it. (Can this be taken advantage of to enter other places the team suspects might exist?) Its raw material can be molded, albeit not into anything useful.
- The Persona provides protection of a sort; people without them (or something else, such as an angel) appear to be gradually "rejected", as Yoshimi was when Neko Shogun left her.
- The white light that burns without radiating heat at the edges of various plot dungeons has not been explained yet, but may be the parts of Paradise that haven't taken form from the thoughts of those inside.

Personas:
- Personas are summoned via phones, by dialing the number that calls the P-user-to-be when they first enter Paradise. It's unknown what happens to a person who enters Paradise without a Persona and/or a phone (though the apparent dungeon dissolution that happened to Yoshimi is likely this in action).
- The team (and angels) can recognize people with the potential to use Personas on sight. This indicates that it is somehow innate, but few people possess it.
- There is some sort of IC arcana link, as demonstrated by the masks. This is confirmed by Sato Kei's status as the Wild Card/Fool.
- It's possible to pick up someone else's Persona, although the circumstances under which this happens are uncertain. It's also possible to transfer Personas, although accepting them may be a trait unique to angels.
-Personas can evolve when a certain degree of self-acceptance is reached. This, along with Raphael's reference to the Persona as the "true self", indicates a strong link to the user's mental state. It is probable that they grow stronger as the user's bonds with other Persona-users mature, but there hasn't been much direct evidence of this IC yet.