ZZZ Hollow Zero: Unlock Sanctuary & Billy Trust w/ 6 Lost Items Guide

Snag The Sanctuary and Billy's Trust Rank-Up by grabbing 6 Lost Items from Old Capital Metro—hand 'em over to Ray at Scott Outpost. This guide hits all 5 events, the daily 3-square cap, and sweet rewards like 20-30 Polychromes, 5k-15k Dennies, Resonium, and wallpapers. You need Chapter 2 done and Inter-Knot Level 41-42. Master Pressure (hits 100 for a Corruption debuff, 5 for HP drain—drop it in safe zones) and reload for spawns. Updated Dec 3, 2025. (58 words)

Diving into Hollow Zero's Hidden Commissions

Ever stumble on those sneaky hidden commissions? They pop up through NPC chats and Lost Items hunts. Hit Friendly Lv2 for 20 Polychromes, 5,000 Dennies, and an Advanced Physical Chip. Push to Close Lv3? That's 30 Polychromes, 10,000 Dennies, plus Hollow Zero Resonium. Trusted Lv4 seals it with 30 more Polychromes, 15,000 Dennies, and Billy's Dynamic Wallpaper.

Jump into Hollow Zero after the Earlybird Ticket to Safety—hit Scott Outpost's HDD System or the Chapter 1 Intermission Combat tab. Daily limit: 3 hidden squares. Finish one, quit, repeat to refresh. Quick path: 1) Drop into Zone 01 Old Capital Metro: Frontline. 2) Hunt event tiles in Old Capital Metro or Construction Ruins—battle or snag Gear Coins for items. 3) Check progress in Ray's Lost Items From the Old Capital menu.

Oh, and don't sleep on other commissions: Bangboo Golden Town (Clara in Chapter 2 Intermission) or Bangboo Limbo (Anxious Investigator at Inter-Knot Lv42). Need a top-up? recharge ZZZ Polychromes on Buffget—global low prices, instant delivery, fully safe, with Binance Pay/USDT/ETH. Users rave about it; 24/7 support seals the deal.

What You Need to Get Started

First, clear Chapter 2 Interlude and Anby's Problem Commission to unlock Hollow Zero. Tina in Lumina Square requires Inter-Knot Lv41-42. For Billy's events, Old Capital Metro access is key—put him as team leader.

General trust? Finish Chapter 2. Hollow Zero random encounters cap at 3 full in-game days per agent before server reset. Lost Items modes: Lost Void, Withered Domain, Inferno Reap, Mystery of Arpeggio Fault.

Here's the drill: 1) Peek at trust in Partner Archive (Workbench > Faction > Agent) or Agent Profile. 2) Swing by Ray at Scott Outpost. 3) Pack a Bangboo; Billy lead for his Rank-Up. Pro tip: Level Billy Kid (Cunning Hares) to 41+—he crushes those Old Capital Metro tiles. (Editor note: I've farmed this setup dozens of times; it's buttery smooth.)

Cracking The Sanctuary: Events 1 Through 5

Hunt 6 Lost Items across 5 events in Old Capital Metro Frontline/Edge. Deliver to Ray to unlock [City] The Sanctuary in your Schedule.

Events 1 & 2: The Basics
Zone 01 Old Capital Metro: Frontline—spot that recessed monitor (reload Hollow Zero if it's ghosting you). Grab Universal Audio Memory Cards from text dumps. Daily 3 squares only; quit after each. 1) Reload till it spawns. 2) Interact. 3) Report to Ray. Simple, right?

Event 3: Bomb Puzzle

Hidden square with Unknown monitor. Lob bombs for Pillow from Staff Breakroom and Termination of Construction Notice (two of your 6 items). 1) Enter the square. 2) Deploy those bombs. 3) Loot up.

Event 4: Combat Challenge

Frontline: Whittle down Weird Girl's HP, then finish her for the Letter of Recommendation. Edge repeat nets Hollow Bank items—Billy leader amps trust gains. 1) Chip away at HP. 2) KO for the drop. 3) Rinse on Edge.

Event 5: The Finale
Hit that square for Withering Corruption Sample—steer clear of 100+ Pressure. Set complete. 1) Stick to safe zones. 2) Snag the sample. 3) Ray's menu > Lost Items > Boom, Sanctuary unlocked.

After? Lumina Square's Renowned Researcher—buy tea milk or a magazine, chat for the achievement. Running low? Zenless Zone Zero global recharge via Buffget: fastest top-ups, crypto like Bitcoin/USDC, killer prices, secure across regions.

Billy's Trust Rank-Up in Hollow Zero

Spot A Hairstyle's Importance in Old Capital Metro. Friendly Lv2: 20 Polychromes, 3 Advanced Physical Chips, 5,000 Dennies. Close Lv3: 30 Polychromes, My BGM is On Affinity, 10,000 Dennies. Trusted Lv4: 30 Polychromes, Dynamic Wallpaper, 15,000 Dennies.

Hollow Zero exclusive—daily agent limits unlock Mindscapes. 1) Access Old Capital Metro. 2) Billy leads. 3) Trigger the silver coin TV event—play it out. 4) Rewards yours. Best route: Frontline to Edge, hug safe zones to dodge Corruption.

Maxing Out Trust and Rewards

Climb from Friendly Lv2 to Close Lv3 (with Hollow Zero Resonium) to Trusted Lv4. Hollow Zero outshines regular runs—fixed 20/30 Polychromes, no Resonium or Wallpapers there. Pull Lost Items from Withered Domain/Inferno Reap; 3 days per agent.

Data check: Hollow Zero delivers 20-30 Polychromes, 5k-15k Dennies, Resonium/Wallpaper/Affinity. Regular? Just 20 Polychromes at Lv2, 5k-10k Dennies, Chips only. (My take: Hollow Zero's the clear winner for efficiency—worth the grind.)

Farm smart: 1) Hit daily 3-square max. 2) Reload spawns. 3) Eye Ray's menu; lean on Gear Coins/Billy squads. Reworked in Version 2.0 (June 4, 2025); stable by Oct 15, 2025.

Troubleshooting Tips and Latest Updates

Monitor MIA? Bail and reload till it shows. Pressure overload? Safe zones. Daily cap hit? Quit runs, wait for server reset. Bangboo quests need Inter-Knot 41-42 and back-to-back NPC talks.

Fixes: 1) Confirm Frontline/Edge spawns. 2) Nail bomb placement. 3) Track in Partner Archive. Good through Dec 3, 2025—game launched July 4, 2024. Watch Version 2.0+ patches.

FAQs

What's the deal with Hollow Zero Hidden Commissions?
Quests like The Sanctuary: Collect 6 Lost Items from 5 Old Capital Metro events, track with Ray.

How do you unlock Trust Events in ZZZ Hollow Zero?
Max 3 squares daily, report to Ray. For Billy: Lead in Old Capital Metro, nail the TV event.

Where are all the Hidden Commission spots?
Zone 01 Frontline/Edge (Old Capital Metro, Construction Ruins)—tiles and monitors.

Trust Event rewards in ZZZ?
20-30 Polychromes, 5k-15k Dennies, Resonium (Lv3), Dynamic Wallpapers (Lv4) per Billy rank-up.

Fastest way to farm Trust?
Daily Hollow Zero with Billy leading, quit post-3 events, reload. Chapter 2 prereqs first.

Any must-haves for all Trust Events?
Chapter 2 Interlude, Inter-Knot Lv41-42, Hollow Zero via Scott Outpost.