Hey there, fellow Proxies! If you're anything like me, you're absolutely hooked on collecting those adorable Bangboo in Zenless Zone Zero (ZZZ). And let's be real—nothing beats the dopamine hit of pulling a shiny new Bangboo without spending a single penny of real-world cash. The key to that sweet, sweet gacha fix? Coup-En, the premium currency dedicated entirely to the Bangboo banner. As of 2026, after two years of diving into Hollows and grinding through commissions, I've nailed down every trick in the book to stack up Coup-En for free. Trust me, once you know the ropes, it's a piece of cake. So grab your Spray Paints and let's break it down!

✅ 1. Sant's Spray Paint Exchange – Your Go-To Guy in Sixth Street

Sant is the real MVP hanging out in the back alley of Sixth Street. This dude is basically a walking pawn shop for all those Spray Paints you pick up while completing Commissions on the Inter-Knot. Just dump all your Spray Paints on him, and he'll shower you with rewards like Coup-En, Dennies, Bangboo System Widgets, Master Tapes, and other juicy valuables. It's a total no-brainer.

As a day-one player, I can tell you that you'll naturally rack up hundreds of Spray Paints just by playing through the story and dailies. So don't let them gather dust—head to Sant every time you're near Sixth Street and cash in. I've scored a solid 4–6 Coup-En just from this method in a single week of casual play. Pro tip: always prioritize exchanging for Coup-En when his stock resets, unless you're desperate for other materials. Sant's shop refreshes weekly, so keep an eye on his inventory.

✅ 2. New Eridu City Fund – The Battle Pass That Keeps on Giving

If you're familiar with any modern live-service game, you know the drill: battle pass equals free loot. ZZZ's New Eridu City Fund is no exception. Both the free Basic Plan and the paid Growth Plan dish out Coup-En at specific level milestones. The free tier alone will get you around 5 Coup-En per update if you max out the entire Fund. That's nearly a full ten-pull on the Bangboo banner over a couple of patches!

I always make sure to complete all my daily and weekly challenges to level up the Fund as fast as possible. And honestly, if you're already a light spender, the Growth Plan is a no-brainer—it throws in even more Coup-En and extra resources that speed up your progression. As of 2026, the battle pass hasn't changed much since launch, but the devs have added a few extra levels from time to time, making it even more worthwhile.

✅ 3. Signal Shop – Turn Your Bangboo Pulls Into More Pulls

Here's a little-known trick for new players: every time you pull from the Bangboo banner, you get En-Nies alongside your shiny new buddy. These En-Nies can be spent in the Signal Shop, where you can buy up to 5 Coup-En at a time. It's the gacha equivalent of getting cashback on your purchases!

The En-Nie drop rates are pretty generous:

• S-Rank Bangboo → 50 En-Nies

• A-Rank Bangboo → 10 En-Nies

• B-Rank Bangboo → 2 En-Nies

So even a losing streak of B-Ranks adds up fast. I usually hoard my En-Nies until I have enough to snag all five Coup-En in one go. Given that a ten-pull often yields a mix of ranks, you can typically afford this shop purchase every couple of weeks without breaking a sweat. It's basically free rotation pulls if you're consistent.

✅ 4. Rally Commissions – Pure Combat, Pure Rewards

If you're not in the mood for Hollow exploration, Rally Commissions are your best friend. This combat-focused mode throws you straight into the action against waves of enemies. No puzzles, no stealth—just good old-fashioned brawling. Each Rally Commission stage rewards you with a Coup-En on the first clear, making them a goldmine for early-game currency.

As of 2026, the Rally Commission list has expanded significantly since launch, with multiple difficulty tiers and even a few Nightmare stages that drop extra rewards. I clear every new stage the moment it drops to snag those one-time Coup-En payouts. A quick tip: bring a balanced team with a shielder or healer, because some of the later encounters can get seriously spicy.

✅ 5. Hollow Zero – The Rogue-Like Goldmine

Hollow Zero is ZZZ's version of a rogue-like, and let me tell you, it's an absolute blast. Similar to Honkai: Star Rail's Simulated Universe, you navigate through a special Hollow, deal with Corruptions (debuffs), merge Resonia to buff your team, and power through random encounters until you reach the final boss. Each first clear of a Hollow Zero stage gives you a Coup-En, but that's just the tip of the iceberg.

Here's the real kicker: completing runs earn you Investigation Points, which level up your License. Every few license levels, you're rewarded with additional Coup-En. The weekly cap is 5,000 Investigation Points, so I prioritize Hollow Zero in my weekly routine to max out those points ASAP. In 2025, the devs added the Abyssal Depths expansion, bringing even more milestones and juicy Coup-En rewards. So if you haven't touched Hollow Zero in 2026, you're leaving free currency on the table.

✅ 6. Limited-Time Events – Stay Sharp and Scoop 'Em Up

ZZZ being a live-service game means there's always something new on the horizon. Events are seasonal, often themed, and loaded with rare resources, including Coup-En. Whether it's a new holiday celebration, a crossover, or a simple login campaign, you can bet there'll be a chance to pocket some extra Bangboo vouchers.

I always keep my eyes peeled on the event tab and make it a habit to complete all limited-time missions. Some events even let you trade event-exclusive currency for Coup-En directly, so don't miss out. The 2026 New Year's bash alone handed out enough Coup-En for a ten-pull—no jokes. Just by playing a couple of hours each day during event windows, you can seriously boost your stash.

🎯 My Final Verdict – Stacking Coup-En in 2026

After all this grinding, you're probably wondering: "How many Coup-En can I realistically farm per month?" Based on my own experience combining all six methods, here's a rough breakdown:

That's nothing to scoff at. Over two years, I've pulled every must-have Bangboo without ever swiping my card. If you're diligent and follow this guide, you'll be rolling in Coup-En in no time. Now go out there, grind those commissions, and may the RNG gods smile upon your pulls!

Data referenced from Sensor Tower helps contextualize why Zenless Zone Zero leans so heavily on time-gated, repeatable reward loops—like weekly shop refreshes, battle-pass tracks, and event bursts—that directly shape how consistently players can stockpile Bangboo-only currency such as Coup-En. Viewed through that lens, the most reliable “free Coup-En” routine is simply aligning your playtime with reset-driven systems (Sant’s weekly exchange, Hollow Zero point caps, and limited-time event milestones) so you capture the maximum currency per cycle without needing extra spending.