Honkai: Star Rail Sunday Build Guide: Best Relics, Light Cone, Team Comps, and more

The Version 2.7 update of Honkai: Star Rail brings the much-anticipated 5-star limited character, Sunday. Sunday is an Imaginary character following the Path of Harmony. This Honkai: Star Rail Sunday Build Guide will help you get the most out of his abilities by offering a detailed breakdown of his skills and recommending the best configurations to optimize his performance.

Sunday Gameplay and Kit Explained

Sunday is a Support unit that increases crit dmg, crit rate, and dmg dealt, and manages skill point economy, making him indispensable for teams that rely on high-damage rotations or summon mechanics.

Basic Attack

Deals Imaginary DMG to a single target based on his ATK.

Skill

Sunday’s Skill is a core part of his utility. It enables one ally and their summon to immediately take action, increasing their damage dealt by 20% for 2 turns. If the target has a summon, the damage increase is further enhanced by an additional 20%. This ability is exceptional for summon-focused characters. However, when used on characters from the Path of Harmony, the immediate action effect is disabled to prevent abuse of turn manipulation. Additionally, using this Skill on “The Beatified” allows Sunday to recover 1 Skill Point, providing an excellent skill economy.

Ultimate

Sunday’s Ultimate regenerates 20% of an ally’s max Energy and transforms them and their summon into “The Beatified.” This state grants them a CRIT DMG bonus equal to Sunday’s CRIT DMG, plus an additional flat percentage. “The Beatified” effect lasts for 3 turns, but its duration decreases by 1 turn at the start of each of Sunday’s turns. Only the most recent target can remain in this state, and it is dispelled if Sunday is knocked out. 

Talent and Technique

Sunday’s Talent further enhances his supportive capabilities. When using his Skill, the targeted ally gains a 10% CRIT Rate boost for 2 turns.  Meanwhile, his Technique provides a powerful opening advantage. When used before battle, the first ally to receive Sunday’s ability gains a 50% DMG increase for 2 turns.

When leveling Sunday’s abilities, prioritize Skill > Ultimate > Talent > Basic Attack

Traces

• Rest Day’s Longing ensures that his Ultimate always regenerates at least 40 Energy for the target, even in suboptimal scenarios. 
• Exalted Sweep allows Sunday to regenerate 25 Energy at the start of battle, giving him a head start in ability rotations. 
• Haven in Palm adds a debuff-cleansing effect to his Skill, which enhances his versatility as a support character.

Among his Traces, priority should be Rest Day’s Longing > Haven in Palm > Exalted Sweep

Honkai: Star Rail Sunday Materials Needed

Refer to the detailed farming guide for Sunday as we break-down his materials and how to obtain them effectively. To summarize his materials:

Character Level-Up Materials

• 65x Chordal Mirage
• 15x Tatters of Thought
• 15x Fragments of Impression
• 15x Shards of Desires
• 3x Travel Encounters
• 3x Adventure Log
• 289x Traveler’s Guide
• 888,000x Credit

Trace Level-up Materials

• 18x Firmament Note
• 69x Celestial Section
• 139x Heavenly Melody
• 41x Tatters of Thought
• 56x Fragments of Impression
• 58x Shards of Desires
• 12x Lost Echo of the Shared Wish
• 8x Tracks of Destiny
• 3,000,000x Credit

Honkai Star Rail Sunday Best Relics and Planar Ornaments

When choosing relics for Sunday, it’s essential to focus on maximizing his supportive and survivability capabilities. In this section of Honkai: Star Rail Sunday Build Guide we will discuss on what relics, main stats, and planar ornaments you need to focus on for Sunday.

• Body (Crit DMG)
• Feet (Speed) 
• Planar Spear (HP% or DEF%)
• Link Rope (ERR)

Speed should be the top priority until Sunday reaches a breakpoint of 134 Speed (optimal). After Speed, CRIT DMG% is the next most important, as it directly increases the potency of his Ultimate’s buffs. Following that, HP% or DEF% substats should be prioritized to enhance his survivability. For the Link Rope, an Energy Regeneration Rate is vital. This ensures that Sunday can sustain the high energy cost of his Ultimate (130 Energy) and provide consistent energy recovery and CRIT DMG buffs for his allies.

Relic Set

Sacerdos’ Relived Ordeal	2-Piece Bonus: Increases SPD by 6%. 4-Piece Bonus: When using Skill or Ultimate on one ally target, increases the ability target’s CRIT DMG by 18%, lasting for 2 turn(s). This effect can stack up to 2 time(s).
2-pc Sacerdos’ Relived Ordeal/2-pc Messenger Traversing Hackerspace	2-Piece Bonus: Increases SPD by 6%. 2-Piece Bonus: Increases SPD by 6%.

Planar Ornaments

Broken Keel	2-Piece Bonus: Increases the wearer’s Effect RES by 10%. When the wearer’s Effect RES is at 30% or higher, all allies’ CRIT DMG increases by 10%.
Lushaka, the Sunken Seas	2-Piece Bonus: Increases the wearer’s Energy Regeneration Rate by 5%. If the wearer is not the first character in the team lineup, then increases the ATK of the first character in the team lineup by 12%.

Honkai Star Rail Sunday Best Light Cone

A Grounded Ascent (Sunday 5* Light Cone)	Sunday regenerates 6 Energy after using a Skill or Ultimate on an ally, ensuring quicker access to his abilities. Grants the target a stack of “Hymn” (up to 3 stacks), increasing their damage by 15% per stack for 2 turns, maximizing team damage output. Restores 1 Skill Point after every two uses of Sunday’s Skill or Ultimate on an ally, improving resource management in challenging battles. It is highly recommended that players opt for his Light Cone instead of his E1 as it offers utility through energy regen, damage buffs, and Skill Point economy, making it a highly versatile and powerful choice for Sunday.
Earthly Escapade (5*)	Increases Sunday’s critical damage, enabling him to deal higher damage with his attacks. Enhances allies’ CRIT RATE and CRIT DMG, boosting overall team DPS. Ideal for compositions where critical hits are a priority, especially with Sunday in a supporting role.
But the Battle Isn’t Over (5*)	Improves Sunday’s Energy Regeneration, allowing frequent use of Skills and Ultimates. Similar to the Signature Light Cone, regenerates 1 Skill Point after every two uses of Sunday’s Ultimate on an ally. Grants a damage boost to the next ally who acts after Sunday uses his Skill, synergizing with DPS-focused team members. A balanced option that is obtainable through the standard gacha pool.
Dance! Dance! Dance! (4*)	When Sunday uses his Ultimate, all allies’ actions are advanced forward, speeding up their turns. Improves team action, allowing faster follow-ups or recovery. Works well in teams that rely on frequent rotations and quick responses.
Past and Future (4*)	After Sunday uses his Skill, the next ally (excluding Sunday) receives a significant damage buff for 1 turn. Outperforms some 5-star options like Bronya’s Light Cone in terms of raw damage boosting. Lacks energy recharge and Skill Point regeneration, but still an excellent choice for F2P players looking to amplify their team’s damage.

Best Team Comps for Sunday in Honkai Star Rail

Sunday is a highly versatile Harmony support capable of fitting seamlessly into a variety of team compositions. His specialty lies in amplifying the performance of the main DPS and their summons. Sunday’s ability to advance forward summons, combined with his offensive buffs and energy restoration, allows summon-reliant characters to unleash their full potential more frequently. In the final section of this Honkai: Star Rail Sunday Build Guide, let’s dive into his ideal team compositions.

Sunday, Jing Yuan, Robin, Aventurine/Huohuo (Best Team)

Pairing Sunday with Jing Yuan is especially effective due to the synergy between Jing Yuan’s summon mechanics and Sunday’s kit. Sunday boosts the damage of Jing Yuan’s Lightning Lord while also accelerating its turns. Robin complements Sunday exceptionally well, as she provides additional offensive buffs and her Ultimate advances all allies’ actions. This synergy creates opportunities for hypercarry DPS units to take multiple turns in quick succession, maintaining pressure on opponents. Aventurine is another great pairing with Sunday, offering a more defensive option for teams. Although Aventurine can also be switched with Huohuo as a sustainer.

Other team comps include:

• Sunday, Robin, Topaz, Lingsha
• Sunday, Dan Heng IL, Sparkle, Huohuo
• Sunday, Boothill, Aventurine, Ruan Mei

Sunday fits perfectly in traditional hypercarry team compositions, where a single DPS, such as Boothill or Dan Heng IL, or even FUA (Follow Up Attacks) focused teams like Topaz and Lingsha is the main damage dealer. In these setups, Sunday’s utility and buffs ensure the hypercarry can continuously dominate the enemies Pairing Sunday with other Harmony units like Ruan Mei and Sparkle further enhances the synergy, Sunday’s buffs aligns with them and create a constant buff for the hypercarry DPS. However, Sunday’s utility is less effective with Break or DoT-focused characters since their gameplay relies more on consistent application of effects rather than outright offensive bursts, where other supports might be more optimal.

Final Thoughts

Sunday’s universal nature as a Harmony character allows him to thrive in hypercarry teams and summon-centric compositions, making him an incredibly flexible and impactful support. With the upcoming introduction of the Path of Remembrance in Version 3.0, Sunday’s utility as a universal support becomes even more significant as Remembrance focuses on summoning memosprites to the battlefield. As the meta shifts with the introduction of Remembrance, Sunday’s role as a universal Harmony support becomes even more valuable, providing unparalleled utility and synergy for both new and existing team compositions.

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