Sunday Build Guide
Best relics, light cones, team compositions & trace priority for Honkai Star Rail 4.0 (February 2026)
📖 Sunday Overview
Sunday is a 5-star Imaginary Harmony character and one of the two best supports in Honkai Star Rail. He provides turn advance and energy restoration to a single DPS unit and their memosprite, along with powerful CRIT Rate and CRIT DMG buffs. He becomes SP-neutral when his Ultimate is activated.
Element
Imaginary
Path
Harmony
Rarity
★★★★★
Tier
SS
⚔️ Skills Breakdown
Basic Attack
Deals Imaginary DMG to a single enemy.
Skill
Advances a single ally and their memosprite forward. Provides CRIT Rate and CRIT DMG buffs.
Ultimate
Restores energy to a single ally. Makes Sunday SP-neutral for the duration.
Talent
When buffed ally acts, Sunday gains energy. Buffs scale with Sunday's stats.
Technique
Provides initial energy boost to the team at battle start.
🛡️ Best Relics & Planar Ornaments
Relic Sets
🏆 Best in Slot
Messenger Traversing Hackerspace (4pc)
Alternatives
Watchmaker, Master of Dream Machinations (4pc), Musketeer of Wild Wheat (4pc)
Planar Ornaments
🏆 Best in Slot
Lushaka, the Sunken Seas
Alternatives
Broken Keel, Penacony Land of the Dreams
🔮 Best Light Cones
🏆 Best in Slot
A Grounded Ascent (Signature)
Alternatives (ranked)
Memories of the Past (4★), Dance at Sunset (4★), But the Battle Isn't Over
📊 Stat Priority & Main Stats
Body
CRIT DMG (for buff transfer)
Feet
SPD
Sphere
HP% or DEF%
Rope
Energy Regeneration Rate
Sub-stat Priority
SPD > CRIT DMG > HP% > DEF%
Target Stats
160+ SPD for speed tuning, high CRIT DMG for buff transfer
👥 Best Team Compositions
🏆 Optimal Teams
Team 2
Alternative Teams
📈 Trace & Eidolon Priority
Trace Upgrade Order
Skill > Ultimate > Talent > Basic Attack
Eidolon Priority
E1 (massive upgrade) > E2 > E6
✅ Pros & Cons
✅ Pros
Provides turn advance to DPS and their memosprite
Energy restoration for a single unit
Powerful CRIT Rate and CRIT DMG buffs
SP-neutral when Ultimate is activated
Universal — works with almost any DPS
❌ Cons
Buffs only target one party member
Requires SPD tuning for optimal rotations
High investment in CRIT DMG substats needed
💡 Tips & Tricks
Speed tune Sunday to act just before your main DPS for maximum efficiency.
His CRIT DMG buff transfers based on his own CRIT DMG — stack it in substats.
Pairs exceptionally well with Phainon, Jing Yuan, and Aglaea.
Use Energy Regeneration Rate rope to ensure consistent Ultimate uptime.
❓ Frequently Asked Questions
What are the best relics for Sunday?
The best relic set is Messenger Traversing Hackerspace (4pc) paired with Lushaka, the Sunken Seas as the planar ornament. Alternatives include Watchmaker, Master of Dream Machinations (4pc), Musketeer of Wild Wheat (4pc).
What is the best Light Cone for Sunday?
The best Light Cone is A Grounded Ascent (Signature). Good alternatives include: Memories of the Past (4★), Dance at Sunset (4★), But the Battle Isn't Over.
What tier is Sunday in HSR 4.0?
Sunday is ranked SS Tier in our Honkai Star Rail 4.0 tier list as of February 2026.
Is Sunday worth pulling?
As a SS Tier Support, Sunday is absolutely worth pulling and one of the best investments in the game.