Sunna Banner Guide: Polychrome Cost & Guarantee Calculator

**Quick Answer:** Guaranteeing Sunna requires up to 28,800 Polychromes (180 pulls worst-case), though most need 14,400-19,200 depending on pity status. Banner runs February 6 - March 4, 2026. F2P players earn 16,000-26,000 Polychromes through dailies, Hollow Zero, Shiyu Defense, and events before deadline.

Author: BitTopup Publish at: 2026/02/21

Sunna Banner Timeline & Why She Matters

Version 2.6 launches February 6, 2026 at 11:00 AM UTC+8. Sunna's Exclusive Channel banner runs Phase 1 through March 4, 2026—exactly 26 days to pull.

Sunna's Stats:

  • 5,095 HP / 7,896 ATK / 666 DEF
  • Signature W-Engine: 713 base ATK, 60% Energy Regen, 0.6 Energy/sec off-field
  • Mesmerized state: 210-500% ATK Physical DMG as guaranteed CRIT + 100% CRIT DMG (12s duration)
  • Squad buffs: +50 ATK (30s), +30% Stun DMG Multiplier (40s)

Premium Physical Support for stun-focused teams. Pity carries to Phase 2 Aria banner and all future Exclusive Channel banners.

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Signal Search Pity System Explained

Base Mechanics:

  • S-Rank drop rate: 0.6% per pull
  • Hard pity: Guaranteed S-Rank at pull 90
  • 50/50 system: First S-Rank has 50% chance for featured agent
  • Lost 50/50: Next S-Rank guaranteed featured agent

Soft Pity (Pull 75-90):

  • Rate increases from 0.6% → 6% at pull 75
  • Escalates progressively to 100% at pull 90
  • Most S-Ranks drop between pulls 75-85

Track Your Pity: Signal Search > Exclusive Channel > Details > History. Count pulls since last S-Rank. Game doesn't display pity—manual tracking required.

Zenless Zone Zero Signal Search Exclusive Channel pull history interface

Guarantee status persists across banners. Lost 50/50 on previous banner? Your next S-Rank is guaranteed Sunna.

Polychrome Cost Breakdown

Worst-Case (28,800 Polychromes):

  • First pity: 90 pulls × 160 = 14,400
  • Lose 50/50 to standard agent
  • Second pity: 90 pulls × 160 = 14,400
  • Total: 180 pulls = 28,800

Occurs in ~25% of cases reaching hard pity twice.

Average Case (12,800-19,200):

  • First pity average: 80 pulls × 160 = 12,800
  • 50% chance this is Sunna (done)
  • 50% need second pity: 80 pulls × 160 = 12,800
  • Median: ~19,200 (1.5 pities)

Starting With Existing Pity:

  • At 45 pity, no guarantee: 4,800-6,400 for first S-Rank, potentially +12,800 if lose 50/50 = 17,600-19,200 total
  • Have guarantee from previous lost 50/50: Only 12,800-14,400 needed

Zenless Zone Zero Hollow Zero mode rewards and Polychrome farming screenshot

Complete F2P Polychrome Farming Guide

Daily Commissions: 1,560 Polychromes

  • 60/day × 26 days = 1,560 (9.75 pulls)
  • 5-10 minutes daily
  • Never miss—can't stack

Hollow Zero: 13,920 Polychromes

  • 4,640/week × 3 weeks = 13,920 (87 pulls)
  • Largest weekly source
  • Essential—prioritize high difficulty tiers

Shiyu Defense: 2,016 Polychromes

  • 1,008/cycle × 2 cycles = 2,016 (12.6 pulls)
  • Bi-weekly reset
  • Clear as many floors as possible

Version 2.6 Events: 2,000-3,500 Polychromes

  • Gilded Surprise (Feb 14-20): 600-1,200
  • Combat events: 800-1,200
  • Exploration events: 400-800
  • Monitor event calendar—limited time

Zenless Zone Zero Sunna character artwork showcasing Physical Support design

Inter-Knot Membership: 3,000 Polychromes

  • 3,000 over 30 days = 18.75 pulls
  • Best value for light spenders
  • Prioritize before direct Polychrome packs

Total F2P Income (Feb 6 - Mar 4)

Renewable Sources:

  • Dailies: 1,560
  • Hollow Zero: 13,920
  • Shiyu Defense: 2,016
  • Subtotal: 17,496

Limited Sources:

  • Events: 2,000-3,500
  • Story/exploration: 1,500-3,000
  • Subtotal: 3,500-6,500

Total: 21,000-24,000 Polychromes (131-150 pulls)

Sufficient for single pity with high probability of double pity if starting with moderate existing pity.

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Week-by-Week Projection

Week 1 (Feb 6-12): 6,868 (42 pulls)

  • Dailies: 420 | Hollow Zero: 4,640 | Shiyu: 1,008 | Events: 800

Week 2 (Feb 13-19): 6,660-7,260 (41-45 pulls)

  • Dailies: 420 | Hollow Zero: 4,640 | Gilded Surprise: 600-1,200 | Events: 1,000

Week 3 (Feb 20-26): 5,860 (36 pulls)

  • Dailies: 420 | Hollow Zero: 4,640 | Events: 800

Week 4 (Feb 27-Mar 4): 1,808 (11 pulls)

  • Dailies: 300 | Shiyu: 1,008 | Events: 500

F2P players starting day one achieve 130-145 pulls by deadline.

Common Polychrome Mistakes

Standard Banner Doesn't Affect Limited Pity Separate counters. Standard Channel pulls don't advance Sunna pity. Only Encrypted Master Tapes/Polychromes on Exclusive Channel count.

Not Tracking Pity Accurately Manual tracking required. Use spreadsheet or community calculators. Record total pulls since last S-Rank and guarantee status.

Confusing Guarantee Status Guarantee persists indefinitely across Exclusive Channel banners. Lost 50/50 previously? Next S-Rank on any Exclusive banner is guaranteed featured agent.

Wasting Polychromes on Non-Essentials Avoid during banner periods:

  • Battery charges (stamina refreshes)
  • Shop materials farmable through gameplay
  • Cosmetics

Reserve all Polychromes for pulls until securing Sunna.

Should You Pull for Sunna?

Meta Position

  • Fills Physical Support niche
  • Guaranteed CRIT hits + 100% CRIT DMG synergizes with high ATK agents
  • Squad-wide buffs enhance Physical teams
  • Limited value for Ether/Fire/Electric compositions

vs Future Banners

Version 2.7+ introduces new S-Ranks. Consider:

  • Immediate roster strengthening vs saving for future
  • Supports maintain longer meta relevance than DPS
  • F2P earn one guaranteed S-Rank every 2-3 versions

Skip If:

  • Primary teams don't use Physical damage
  • Within 30 pulls of pity on 50/50, prefer saving guarantee
  • Version 2.7 leaks show better roster fit
  • New player needing versatile DPS over specialized support

Reruns expected in 6-12 months based on gacha patterns.

Emergency Top-Up Value

First-Time Bonuses (Double Base Amount):

  • Small: 120 + 120 = 240
  • Medium: 600 + 600 = 1,200
  • Large: 1,980 + 1,980 = 3,960

Calculate exact deficit, buy smallest tier covering needs to preserve bonuses.

BitTopup Advantages:

  • Fast delivery before deadline
  • Secure transaction processing
  • Excellent customer service
  • Competitive pricing
  • High user ratings

Ascension & Skill Requirements

Full Ascension:

  • 800,000 Denny
  • 4 Basic Support Seals
  • 32 Advanced Support Seals
  • 30 Ruler Seals (weekly bottleneck)

Skill Upgrades:

  • 2,905,000 Denny
  • 25 Basic Physical Chips
  • 75 Advanced Physical Chips
  • 250 Specialized Physical Chips
  • 5 Hamster Cage Passes

Farm materials during banner period for immediate ascension.

Biggest Fan Bangboo: Shares identical stats (5,095 HP, 7,896 ATK, 666 DEF) for optimal Physical team synergy.

FAQ

How much Polychrome guarantees Sunna? 28,800 worst-case (180 pulls). Most need 12,800-19,200 depending on pity/guarantee. With existing guarantee: 14,400 max (90 pulls).

Does pity carry over? Yes, across all Exclusive Channel banners. Separate from Standard Channel—different counters.

What if I lose 50/50? Next S-Rank on any Exclusive Channel banner guaranteed featured agent. Persists indefinitely until obtained.

Can F2P get enough by March 4? Yes. 21,000-24,000 Polychromes available (131-150 pulls). Sufficient for one guaranteed pity with high double-pity probability if starting with existing pity.

How to check pity? Signal Search > Exclusive Channel > Details > History. Count pulls since last S-Rank. No direct display—manual tracking required.

Is soft pity real? Yes. Starts pull 75 (0.6% → 6% rate). Escalates to 100% at pull 90. Most S-Ranks drop pulls 75-85.

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