The Realm of Greed is a weekly Anomaly Zone in Neverness to Everness tied to the Blind Mammon furniture piece in your apartment. Clearing it pays out Fons scaled to the level you can complete, and the rewards refresh once per week.
Quick answer: Win the Gluttonous Eye at Ebisu's Auction (unlocked after Chapter 3), place the Blind Mammon furniture in your apartment, then interact with it at Home to enter the Realm of Greed. Clear the highest level you can each week before the Sunday reset.

Unlock requirements
Access is gated behind story progress and one auction win. There is no shortcut around the chapter requirement.
| Requirement | Detail |
|---|---|
| Story progress | Clear Chapter 3 of the Main Story to unlock Ebisu's Auction |
| Auction win | Obtain the Gluttonous Eye during the "Deal? Deal!" auction episode |
| Furniture placement | Place Blind Mammon in any owned apartment (Wiener or Fenglin Villa slots) |
| Activation | Interact with Blind Mammon at Home to launch the Realm of Greed |
Blind Mammon is an S-grade Anomaly Furniture piece. Its sole property effect is unlocking the Realm of Greed, so the bonus applies as long as the piece sits in any owned property.

How the Realm of Greed works
Entering the zone places you in a short combat encounter against the Mammon boss. You have roughly 1 minute and 30 seconds to deal damage before the encounter ends and rewards are paid out. Fons earned scale with damage dealt, the level of the Blind Mammon furniture, and the difficulty tier you complete.
Mammon is weak to Lakshana damage. Its resistance to Lakshana sits at 16 percent compared to 20 percent for every other element, so a Lakshana-aligned team clears faster and at higher levels. Hathor (S-Class) and Skia (A-Class) are the launch picks for that weakness.

Leveling up Blind Mammon
The furniture piece scales to a maximum of level 10. Each level raises the Fons cap of the encounter. To rank it up, purchase Covetous Coin from auction purchases.
| Mammon level | Approximate max Fons reward |
|---|---|
| Level 3 | 40,000 |
| Level 4 | 44,500 |
| Level 10 (max) | Highest tier payout |
Because payout scales with level, treat the Realm of Greed as content to revisit after raising both your team and the furniture rank. Rushing it at low Mammon levels leaves Fons on the table every week.
Weekly reset
Realm of Greed rewards reset on a weekly cycle alongside other Home-based weekly content. If you skip a week, those Fons do not roll over. Pair the run with the Special Commissions from the Old Mailbox, which also reset weekly and pay scaled Fons.

Verifying it worked
You will know the unlock chain succeeded when Blind Mammon appears in the Anomaly Furniture menu of your apartment with the "Unlocks Realm of Greed. Complete to earn Fons" property listed. After clearing the encounter, the Fons total is added to your wallet immediately, and the Realm of Greed entry on the Mammon piece will mark as completed for that week.
If the option to enter does not appear, the most common cause is that the Gluttonous Eye was not won at the auction, or the furniture has not been placed and activated in an owned property. Both steps must be done; owning the eye alone is not enough.
Where it sits in the weekly Fons priority
The Realm of Greed is a strong weekly Fons source, but it is not the largest. Cafe by Origen passive income and weekly City Stamina conversion in Hethereau Hobbies generate more raw Fons over a full week. Treat the Realm of Greed as a fixed weekly bonus that stacks on top of those, similar to Special Commissions and Pink Paws Heist runs.
Once Blind Mammon is leveled and your team can clear the highest available tier, the encounter takes under two minutes for a guaranteed weekly payout, which makes it one of the best time-to-Fons ratios in the rotation.