CZN’s Latest Patch Adds Chizuru, Partner Itsuku, Season Chaos Upgrades & Massive QoL Buffs

Chaos Zero Nightmare’s December 3 patch is one of its most content-heavy updates so far. It continues Galactic Disaster Season 1: Forbidden Catalyst with Chapter 2, debuts a new 5★ combatant Chizuru, introduces Partner Itsuku, launches a stacked 21-day login event, opens the Great Rift score mode, adds new Omega Codes and Memory Fragment sets, and sprinkles in a surprising amount of quality-of-life buffs.

Whether you’re pushing endgame score content or just starting to build a roster, this patch gives you a lot to do — and a lot of free stuff to grab.

🆕 New Units: 5★ Chizuru & Partner Itsuku

⭐ New 5★ Combatant: Chizuru

The update’s poster girl is Chizuru, a new 5★ combatant added to the Combatant Pickup Rescue.

• She headlines a rate-up banner, shared with Rei and Tressa.

• Designed as a premium unit for the current meta and Galactic Disaster content.

• Synergizes strongly with the new Partner Itsuku, especially for Psionic-oriented teams.

🤝 New Partner: Itsuku

Alongside Chizuru comes Partner Itsuku, featured in a Partner Rescue Rate-Up.

• Tailor-made to pair well with Chizuru.

• Especially strong as a Psionic Partner, boosting comps built around that archetype.

If you’re aiming to push higher in Forbidden Catalyst and Great Rift, pulling both Chizuru and Itsuku sets you up with a tightly tuned core duo.

🎁 “Chasing the Star’s Trajectory” Login Event

The patch brings a 21-day login campaign that’s honestly too good to ignore.

🕒 Event Period

December 3, 2025 – January 14, 2026

🎀 Total Rewards (21 Days of Login)

Log in across 21 days to collect:

• Signal Amplification Anchor ×10

• Rescue Anchor ×10

• Potential Disk ×60

• Universal Support Certificate ×75

• Universal Tactical Certificate ×90

• Tear of God ×3

• Sweet Choconilla ×9

• Units ×300,000

On top of that, the patch also distributed a 500 Crystal gift as a livestream commemorative reward — a nice little bump toward your next banner.

If you do nothing else this patch, at least log in regularly and grab these.

🌠 Galactic Disaster Season 1 — Forbidden Catalyst Chapter 2

The central seasonal content, Galactic Disaster Season 1: Forbidden Catalyst, moves into Chapter 2: “Seals and Forbidden”.

📚 New Chapters & Unlock Conditions

• Chapter 1 – Unwelcome Visitor from Afar

  • Already live as earlier seasonal content

  • Unlock: Captain Level 35

• Chapter 2 – Seals and Forbidden

  • Begins with the December 3 patch

  • Unlock: Clear Act 1 Episode 9 “Joint Investigation Begins”

• Chapter 3 – Catalyst of Evolution

  • Scheduled to start December 24, 2025

  • Unlock: Clear Act 2 Episode 7 “Approaching the Forbidden”

Once the Galactic Disaster season ends, its Missions will be folded into the regular [Mission] tab, letting latecomers still experience the content, just without the seasonal frame.

💀 The Great Rift — New High-Difficulty Score Mode

One of the patch’s major gameplay additions is The Great Rift, a high-difficulty score-chasing mode aimed squarely at endgame players.

🧩 Great Rift Basics

• You form optimized teams and tackle special stages built around scoring.

• The goal is to push for the highest score possible, then climb the rankings.

🎁 Reward Types

The Great Rift offers three main reward tracks:

1. Score Achievement Rewards – milestone rewards for hitting specific score thresholds.

2. Weekly Cumulative Rewards – based on total score accumulated over the week.

3. Ranking Rewards – including rank-exclusive stickers and other prestige loot.

If you enjoy competitive PvE, team-crafting, and leaderboard bragging rights, Great Rift is where you’ll live.

🌀 Season Chaos & Nebula Distortion Upgrades

The patch also upgrades existing late-game content.

🧭 Season Chaos — Extra Boss & Tunnel Visibility

In Season Chaos, you can now:

• Challenge an additional boss after defeating the main center boss.

• Check Dimensional Tunnel locations directly in the interface, making pathing and planning less guesswork-heavy.

🌪️ Nebula Distortion — Third Boss Added

A third boss is being added to Nebula Distortion:

• Scheduled to open roughly one week after the update, around December 9.

• Expands boss variety and gives you more ways to test different team archetypes and damage types.

Together, these updates make high-end content deeper and more replayable, instead of just being a one-and-done clear.

🧬 Omega Codes & Secondary Supply — Limit Break System

The update introduces Omega Codes, a key new limiter for pushing your best units beyond their previous limits.

🧪 Omega Codes

• Event Period: From December 2 maintenance through January 13, 2026

• Use Pure White Fragments in the Supply Shop to purchase Omega Code items.

• Omega Codes are used for Ego Awakening (Limit Break) of 5★ characters, allowing them to surpass their old caps and elevate their performance.

🛒 Secondary Supply in Resupply Shop

• A new Secondary Supply tab has been added to the Resupply Shop.

• This is where Omega Codes and select other high-end upgrade items are sold.

If you’ve already built a couple of standout 5★ units, Omega Codes are now your path to squeezing even more power out of them.

🧠 New Memory Fragment Sets & Unigram Social System

🧩 Memory Fragments

Two new Memory Fragment sets are now available:

• One designed with Instinct-type characters in mind

• Another focused on Void-type characters

These sets broaden the buildcrafting toolbox, giving you more flexibility to tailor specific units for specialized roles.

💬 Unigram — Chat With Your Squad

The patch also implements Unigram, a new character interaction system.

• Lets you talk to Combatants and access character-specific Missions.

• The first wave of Unigram support covers 7 characters:

  • Chizuru

  • Yuki

  • Haru

  • Rei

  • Mika

  • Tressa

  • Beryl

It adds flavor, story, and extra rewards — all while giving your favorite characters more screen time.

🛍️ Shop Additions & QoL Buffs

Beyond headline content, the patch delivers meaningful convenience and progression boosts.

🛒 New & Improved Systems

• Blackhorn Trade

  • New shop content where you can trade for valuable items and materials.

• Affinity Improvements

  • Additional gift items introduced.

  • A special new Rei lobby added for players who want to spotlight her as their base favorite.

• Leveling Cost Reduction

  • The Units required to level up characters have been reduced by a massive 80%.

  • This dramatically lowers the cost of raising multiple teams, instead of forcing you to hard-focus a single squad.

• Quick Formation

  • A new Quick Formation feature has been added to Team Formation, letting you auto-fill logical squads more easily.

• VO & Presentation Updates

  • New voice lines and voices added to NPCs in Dellang Shop and Ark City, increasing immersion and polish.

All combined, these tweaks mean less time drowning in menus and more time actually playing.

✅ Why This Patch Matters

This December 3 update hits nearly every pillar of a live service RPG:

• New headliner units: A shiny new 5★ combatant Chizuru and Partner Itsuku to build around.

• Seasonal story progress: Galactic Disaster Season 1 moves into Forbidden Catalyst Chapter 2, with Chapter 3 already on the calendar.

• High-end content expansion: Great Rift, upgraded Season Chaos, and a new Nebula Distortion boss deepen the late-game.

• Long-term growth systems: Omega Codes, a new shop tab, and fresh Memory Fragments to tune your best builds.

• Generous rewards: A 21-day login campaign, a 500 Crystal gift, and multiple new reward tracks.

• Huge QoL: 80% cheaper leveling, Quick Formation, upgraded shops, and social systems like Unigram.

For both hardcore players and newcomers, it’s a patch that makes the game bigger and smoother at the same time.

💡 Player Tips for the December 3 Update

• Don’t miss the login event: The anchors, certificates, and Tears of God are too valuable to skip.

• Consider pulling Chizuru + Itsuku together: Their synergy makes them an excellent foundation for late-game team building.

• Work through Galactic Disaster Chapter 2 early: So you’re fully ready when Chapter 3 unlocks later in the month.

• Enter Great Rift as soon as you have stable teams: Treat it as your weekly benchmark for roster strength.

• Use the reduced leveling costs to diversify: Build multiple teams instead of tunneling everything into one comp.

• Check Unigram often: Character Missions there are easy value and extra lore for your favorite units.

If you’re looking to maximize your gains from the new patch—maybe pull for Chizuru, test your team in The Great Rift, or simply get a faster start—the GameMarket.gg community has your back. Explore Accounts for ready-to-go teams, Hourly Services for live help or play support, or Boosting to fast-track your way through the toughest content.