Sunday, the 5-star Imaginary Harmony character, releases December 3, 2025 in Honkai Star Rail Version 2.7 Phase 1. Leaked kit reveals 100% action advance for allies and summons, 20% Energy restoration, CRIT DMG buffs scaling from his stats, and SP recovery. His signature Light Cone A Grounded Ascent amplifies these with Hymn stacks and resource regeneration. While officially Harmony, his mechanics spark speculation about a new Order path.
Sunday's Leaked Kit: Order Path Speculation
Confirmed Leak Details
Sunday releases December 3, 2025 UTC-5 in Version 2.7 Phase 1 alongside Jing Yuan rerun, featuring 4-stars Tingyun, Qingque, and Arlan. Level 80 stats: 1242 HP, 640 ATK, 534 DEF, 96 SPD, 130 Max Energy, 100 Taunt.
His kit manipulates action economy while providing CRIT buffs. Unlike existing Harmony characters boosting ATK/DMG%/elemental damage, Sunday combines action advance with CRIT stat sharing—a hybrid approach potentially warranting new path classification.
Secure pulls through Honkai Star Rail Oneiric Shards via BitTopup for guaranteed access when banners run December 3-25, 2024.
Why Order Path Speculation Exists
Sunday departs from traditional Harmony patterns. Robin provides universal damage amplification, Sparkle specializes in Quantum/CRIT Rate, Ruan Mei handles Break Effect/SPD. Sunday combines multiple support archetypes with unique mechanics.
Skill Benison of Paper and Rites advances ally and summon by 100%—previously exclusive to Bronya, never applied to summons. 30% DMG boost (50% for summons) lasting 2 turns creates summon-team specialization for Jing Yuan, Topaz, future summon DPS. SP recovery when targeting The Beatified allies is unprecedented in Harmony kits.
Ultimate Ode to Caress and Cicatrix restores 20% Max Energy while granting The Beatified status: CRIT DMG equal to 30% of Sunday's CRIT DMG + 12% for 3 turns. This stat-sharing scales from Sunday's build, encouraging CRIT DMG investment—departing from traditional support building prioritizing SPD/Effect RES.
Penacony Narrative Context
Sunday's Penacony storyline connection provides thematic justification for path innovation. As central Dreamscape figure, his abilities reflect control, orchestration, divine intervention—aligning with theoretical Order path philosophy. The Beatified dispels if Sunday downs, creating dependency mirroring narrative themes of faith and guidance.
Technique The Glorious Mysteries boosts first ally ability DMG by 50% for 2 turns, providing pre-battle advantages for opening rotations in Memory of Chaos and Pure Fiction.
Complete Kit Breakdown
Basic Attack: Gleaming Admonition
Deals 100% ATK as Imaginary DMG to single enemy. Primarily Energy generation when conserving SP. Multiplier unchanged at Level 10. Prioritize Skill/Ultimate over Basic ATK; reserve for SP accumulation.
Skill: Benison of Paper and Rites
Lev
vances ally and summon by 100% action value, provides 30% DMG boost (50% for summons) lasting 2 turns.
SP Recovery: Activates when targeting The Beatified allies, regenerating 1 SP per use. Creates positive feedback loop: Ultimate grants The Beatified → subsequent Skills recover SP → sustained Skill usage without depleting resources.
Restriction: Doesn't advance Harmony path allies, preventing infinite loops with Bronya/Sparkle.
Summon Synergy: 50% DMG boost positions Sunday as premier summon support. For Jing Yuan, Lightning-Lord receives immediate action + substantial damage amplification.
Ultimate: Ode to Caress and Cicatrix
Restores 20% Max Energy to one ally while granting The Beatified for 3 turns.
The Beatified Formula: CRIT DMG = 30% of Sunday's CRIT DMG + 12%
Example: Sunday with 150% CRIT DMG grants target 45% (30% of 150%) + 12% = 57% CRIT DMG.
Cri
spels if Sunday downs. Requires defensive team building considerations. 3-turn duration covers multiple DPS rotations.
Talent: The Sorrowing Body
Grants 20% CRIT Rate to Skill target for 3 turns at Level 10. Activates automatically when using Skill. 3-turn duration matches The Beatified for synchronized buff windows.
Enables DPS units to reduce CRIT Rate investment, reallocating substats to CRIT DMG/ATK%/SPD.
Technique: The Glorious Mysteries
Boosts first ally ability DMG by 50% for 2 turns when entering battle. Excels in Memory of Chaos for devastating first-cycle damage. 2-turn duration covers initial Ultimate usage. Costs no SP or Energy.
Trace Abilities
Ascension Traces: +37.3% CRIT DMG, +18% Effect RES, +12.5% DEF
Rest Day's Longing: Sets Ultimate Energy regeneration minimum at 40
Exalted Sweep: Regenerates 25 Energy at battle start
Haven in Palm: Dispels 1 debuff on Skill targets
Order vs Harmony: Core Differences
Mechanical Distinctions
Traditional Harmony distributes buffs through damage amplification, SPD manipulation, resource generation. Sunday combines:
Action advance (Bronya-style)
Energy restoration (unprecedented 20% magnitude)
CRIT stat sharing (scales from his stats)
SP recovery (conditional on buff status)
This multifaceted approach doesn't cleanly categorize within existing Harmony archetypes, suggesting design space for Order path focused on precise team coordination vs broad damage amplification.
Action Value Manipulation
Sunday's 100% advance for ally + summon is most aggressive action manipulation available. Bronya advances single target by 100%, Robin provides 100% only through Ultimate with conditions. Sunday's Skill-based advance has no path restrictions except Harmony.
Summon advancement creates unique synergies. Jing Yuan's Lightning-Lord, Topaz's Numby, future summon units gain immediate actions + enhanced damage buffs. Dual-target value justifies SP cost.
Buff Types and Duration
Sunday emphasizes CRIT stats/DMG% vs ATK/elemental damage. The Beatified's CRIT DMG scales dynamically. Well-built Sunday with 180% CRIT DMG provides 54% + 12% = 66% CRIT DMG, surpassing Sparkle's fixed values.
3-turn duration for CRIT Rate (Talent) and CRIT DMG (The Beatified) ensures excellent uptime. 2-turn DMG boost from Skill requires frequent reapplication but aligns with typical cadence.
Single-target focus concentrates power on hypercarry strategies vs Robin's continuous buffs or Ruan Mei's field-wide effects.
SP Economy
Without The Beatified: Each Skill costs 1 SP (negative)
With The Beatified: Skill recovers 1 SP (neutral)
With A Grounded Ascent: Recovers 1 SP every 2 Skill/Ultimate uses on allies
Combined, Sunday achieves SP-positive rotations, enabling SP-hungry DPS like Seele/Qingque without resource constraints.
Meta Impact
Memory of Chaos
Fast clear times and efficient action economy favor Sunday. Action advance compresses rotations for 0-cycle/1-cycle strategies. 20% Energy restoration accelerates Ultimate-dependent DPS.
Current Meta DPS:
Jing Yuan: Lightning-Lord advancement + enhanced summon damage elevates to top-tier
Seele: Energy restoration for more Ultimate resets
Acheron: CRIT buffs complement debuff-scaling
Technique synergizes with aggressive strategies. Combined with first-turn Ultimates, Sunday facilitates devastating opening cycles.
Pure Fiction & Apocalyptic Shadow
Pure Fiction: Action advance enables primary AoE DPS (Argenti, Himeko) to execute more attacks within turn limits.
Apocalyptic Shadow: CRIT-focused buffs amplify single-target damage. Energy restoration ensures consistent Ultimate uptime against high-HP bosses. SP recovery enables sustained Skill usage.
Summon damage specialization future-proofs for upcoming summon-focused content.
Support Comparisons
Sunday vs Robin:
Robin: Universal DMG%/ATK buffs for all allies, ideal for dual-DPS/spread-damage
Sunday: Concentrated single-target buffs with higher peak, Energy restoration Robin doesn't address
Choice depends on team composition: hypercarry favors Sunday, dual-DPS favors Robin
Sunday vs Sparkle:
Sparkle: Quantum specialization, 50% action advance, CRIT DMG, SP generation, 4-turn duration
Sunday: More flexible than Sparkle's Quantum focus, unique Energy restoration + summon support
Sunday vs Ruan Mei:
Ruan Mei: Break Effect focus, SPD buffs, RES PEN, Break Delay
Sunday: Better for traditional damage dealers vs Ruan Mei's specialized Break support
Optimal Teams
Hypercarry Teams
Structure: Sunday + primary DPS + sustain + flex support
Jing Yuan Team: Jing Yuan, Sunday, Huohuo/Luocha, Tingyun/Asta
L
Rotation: Establish The Beatified on DPS → cycle Skills for buffs/action advance → Ultimate before damage window
Seele Team: Seele, Sunday, sustain, Silver Wolf/Pela
Energy restoration enables frequent Ultimate resets
Action advance accelerates turn cycling
CRIT buffs amplify burst damage
Dual DPS Configurations
Example: Jing Yuan, Acheron, Sunday, sustain
The Beatified applies to latest Ultimate target. Alternate between DPS based on rotation timing:
Jing Yuan receives buffs during Lightning-Lord actions
Acheron receives buffs before Ultimate execution
Requires precise execution but maximizes damage potential. Suits Pure Fiction with mixed single-target/AoE requirements.
F2P Teams
Dr. Ratio Team: Dr. Ratio, Sunday, March 7th, Gallagher
CRIT buffs enhance Dr. Ratio damage
Action advance increases follow-up frequency
Qingque Team: Qingque, Sunday, Tingyun, sustain
SP recovery enables Qingque's SP-intensive playstyle
CRIT buffs amplify enhanced Basic ATK damage
Premium Teams
Acheron Team: Acheron, Sunday, Pela, Aventurine
CRIT buffs complement Acheron's scaling
Aventurine provides sustain + debuffs
Peak Lightning: Jing Yuan, Sunday, Robin, Huohuo
Robin's universal buffs stack with Sunday's targeted enhancements
Huohuo provides Energy + sustain
Maximum Lightning-Lord damage through multiplicative stacking
Build Optimization
Light Cones
A Grounded Ascent (Signature 5-star):
R
Grants 1 Hymn stack per use (max 3): 15% DMG boost each, 24% at S1
Recovers 1 SP every 2 Skill/Ultimate uses
Stats: 1164 HP, 476 ATK, 529 DEF
4-Star Alternatives:
Memories of the Past: Energy Regeneration Rate
Dance! Dance! Dance!: Universal action advance after Ultimate
Planetary Rendezvous: Elemental DMG% for same-element allies
Meshing Cogs (Free): Energy regeneration on Skill use/hit
Relics
4-Piece Sets:
Messenger Traversing Hackerspace: SPD buffs to all allies after Ultimate, 2-piece SPD bonus
Alternative: Musketeer 2-piece + Messenger 2-piece for balanced SPD
Main Stats:
Body: CRIT DMG% (maximizes The Beatified scaling)
Feet: SPD
Planar Sphere: HP%/DEF%
Link Rope: Energy Regeneration Rate
Substats Priority: SPD > CRIT DMG > Effect RES > DEF%
Planar Ornaments
Penacony, Land of the Dreams: Energy Regen + DMG% for same-element allies
Fleet of the Ageless: ATK% to all allies at 120 SPD
Broken Keel: Effect RES + CRIT DMG to all allies at 30% Effect RES
Sprightly Vonwacq: Energy Regen + 50% action advance at battle start
Pre-Farming Guide
Ascension Materials (Estimated)
Calyx Materials: Penacony Bud of Harmony drops (likely Harmonic Tune)
Stock 15 runs (300 Trailblaze Power)
Boss Materials: Penacony Stagnant Shadow (likely Shape of Puppetry)
Allocate 180 Trailblaze Power for 10 runs
Common Drops: Penacony Dream-themed enemies
Stockpile 100+ each tier (basic, advanced, superior)
Trace Materials
Credits: 3-5 million for complete trace leveling
Weekly Boss: Likely Echo of War: Divine Seed or Penacony weekly boss
Tracks of Destiny: 12 total for full trace activation
Resources
Level 80 Requirements:
~300 Hero's Wits (purple experience books)
6 million Credits total
Daily Farming: Alternate between Bud of Treasures (Credits) and Bud of Memories (experience books)
Stellar Jade Calculator
Guaranteed Sunday: 180 pulls max = 28,800 Stellar Jades
50/50 Risk: 90 pulls = 14,400 Jades (50% success)
Monthly Income: 8,000-10,000 Jades from dailies, events, Simulated Universe
Signature Light Cone: 65 pulls = 10,400 Jades (epitomized path)
Total for Sunday + Signature: 39,200 Jades guaranteed
Pull Value Analysis
New Players
Prioritize DPS before supports. Sunday's value scales with DPS quality. However, future-proof design and summon specialization justify early acquisition for long-term planning.
Concurrent Jing Yuan banner creates synergy: secure both for powerful Lightning core team.
Mid-Game Players
Skip if: Own Robin/Sparkle/Ruan Mei and lack summon DPS
Pull if: Lack premium Harmony supports, use Jing Yuan/Topaz, plan summon teams
Versatile kit serves multiple archetypes. CRIT buffs complement most DPS units.
Veterans
Pull if: Use Jing Yuan/Topaz, struggle with Energy management, meta-chasing for hypercarry strategies
Specialized summon support creates unique value unavailable from existing options. Energy restoration solves Ultimate uptime issues.
Eidolon Breakpoints
E0: Complete core functionality. F2P achieves full value.
E1 Millennium's Quietus: 16% DEF ignore (40% for summons) for 2 turns. Highest value-per-Eidolon, especially for summon teams.
E2 Faith Outstrips Frailty: Recovers 2 SP on first Ultimate, grants Beatified targets +30% DMG. Significant power spike, requires ~270 total pulls.
E4: Regenerates 8 Energy at turn start
E6: Stacks Talent CRIT Rate 3x for 4 turns, converts excess CRIT Rate above 100% to CRIT DMG at 2% per 1%. Premium support at whale-level investment.
Leak Reliability Disclaimer
How Leaks Work
Character leaks originate from beta testing. Sunday's kit reflects beta data, subject to changes before release. Historical patterns show core mechanics remain consistent (~80-90% accuracy), numerical values adjust (~50-70% accuracy).
December 3, 2024 release date from official announcements (high confidence). Kit details from beta leaks (moderate confidence).
Potential Changes
Likely Adjustments:
Numerical values: 20% Energy restoration, CRIT percentages, DMG boost values
SP recovery mechanics: activation requirements, recovery amounts
Eidolon effects: specific percentages/mechanics
Unlikely Changes:
Core mechanics: action advance, The Beatified status
Fundamental kit identity
Conservative players should await official announcements before committing resources.
FAQ
When does Sunday release? December 3, 2024 UTC-5 in Version 2.7 Phase 1, running through December 25, 2024. Shares banner with Jing Yuan rerun, features Tingyun, Qingque, Arlan.
What makes Sunday different from other Harmony supports? Combines 100% action advance for allies/summons, 20% Energy restoration, CRIT Rate/CRIT DMG buffs scaling from his stats, conditional SP recovery. Specialized summon support unavailable from Robin/Sparkle/Ruan Mei.
Is signature Light Cone necessary? A Grounded Ascent significantly enhances performance but Sunday functions effectively with 4-star alternatives like Memories of the Past or Dance! Dance! Dance!
Which DPS work best with Sunday? Jing Yuan (summon buffs + Lightning-Lord advance), Seele (Energy restoration for Ultimate resets), Topaz, future summon DPS. Any CRIT-scaling hypercarry benefits from CRIT Rate/CRIT DMG buffs.
Should I pull if I have Robin? Sunday and Robin serve different archetypes. Pull Sunday if using Jing Yuan/Topaz/summon teams or hypercarry compositions. Robin better for dual-DPS/AoE strategies.
How reliable are kit leaks? Beta leaks show 80-90% accuracy for core mechanics, 50-70% for numerical values. December 3 release date from official sources (high confidence). Core mechanics likely consistent, specific percentages may adjust.
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