HSR Sunday Complete Build Kit and Team Guide

Most players look at the Harmony roster and see a crowded room. You have Ruan Mei for Break, Robin for Follow-Up, and Sparkle for Hypercarry. You might look at HSR Sunday and think, Do I really need another buffer?

You do.

If you dig into the kit mechanics of HSR Sunday, you will realize this is not just another stat stick. This is the engine for an entirely new archetype that is about to dominate the meta: The Summoners. While casual players are busy arguing about whether he is better than Bronya, the theorycrafters are realizing that Sunday has single-handedly revived some of the oldest units in the game while laying the groundwork for the future of the Remembrance path.

This is not just about giving your DPS a turn. This is about breaking the action economy entirely.

The Beatified Mechanic Explained

You cannot talk about HSR Sunday without understanding his core gimmick: The Beatified state.

When Sunday uses his Ultimate, he regenerates Energy for a target ally and applies the Beatified status to them and their summon. This is the game-changer.

• The Buff: The Beatified ally gains massive Critical Damage scaling based on Sunday’s own stats.
• The Duration: It lasts for 3 turns, ticking down on Sunday’s turn, not the ally’s. This allows for incredibly high uptime if you speed-tune correctly.

But the real magic happens with his Skill. Just like Bronya, HSR Sunday grants a 100% Action Advance. However, if the target has a Summon (think Jing Yuan’s Lightning Lord or Lingsha’s Fuyuan), the Skill’s DMG buff skyrockets from a standard 30% to a massive 50-80%. Furthermore, he drags the Summon up the action bar immediately after the character.

This effectively deletes the one weakness of Summon units: Speed.

The Summon Meta: Jing Yuan’s Redemption

For years, Jing Yuan mains have suffered. Lightning Lord is slow, gets CC’d, and often strikes after the wave is already dead.

HSR Sunday fixes every single one of these problems. By using his Skill on Jing Yuan, Sunday forces Lightning Lord to take action immediately. This allows you to stack 10 hits instantly and fire off multiple Lightning Lords within a single cycle. The General is no longer a mid-tier option; with Sunday, he arguably becomes one of the highest burst-damage dealers in the game.

This synergy extends to Lingsha and future Remembrance units (like the leaked Memosprites). If you are betting on the future of Honkai Star Rail Sunday, you are betting on a meta where units have pets that do the killing for them.

HSR Sunday Optimal Build Strategy

To make HSR Sunday function as the infinite-turn generator he is meant to be, you need to hit specific stat thresholds.

Relic Sets

Relic Set	Recommendation	Reason
Sacerdos’ Relived Ordeal (4-Piece)	Best in Slot	The perfect set for him. Using Skill/Ult on an ally boosts their Crit DMG by 18% (Stacks 2x). Since Sunday spams Skill, this is permanent uptime.
Messenger Traversing Hackerspace (4-Piece)	Alternative	Good for general team speed, but Sacerdos provides higher damage ceilings for your Hypercarry.
2-Piece / 2-Piece Mix	Budget	Any combination of Speed and Crit DMG sets can work if you are struggling with substats.

You want to maximize his buffing potential while hitting the 134 Speed breakpoint. Planar Ornaments

Energy Regeneration is non-negotiable here.

Planar Set	Recommendation	Reason
Lushaka, the Sunken Seas	Best in Slot	Provides 5% ERR and buffs the ATK of the first character in the lineup (your DPS). Perfect synergy.
Broken Keel	Defensive	If you can hit 30% Effect Res, the extra Crit DMG for the team is always valuable.
Penacony, Land of Dreams	Niche	Only use this if you are running him with an Imaginary DPS like Imbibitor Lunae or Dr. Ratio.

Main Stats

• Body: Crit DMG (To scale his Beatified buff).
• Feet: Speed (Aim for 134 minimum).
• Sphere: HP or DEF (He is squishy; keep him alive).
• Rope: Energy Regeneration Rate (Mandatory for the 3-turn Ultimate rotation).

Best Light Cone for HSR Sunday

This is the most controversial part of building HSR Sunday. His signature Light Cone is incredibly strong, but there are alternatives.

Light Cone	Rating	Analysis
A Grounded Ascent (Signature)	S+ (God Tier)	Fixes his Energy issues completely and makes him SP Positive. It allows him to regenerate 1 Skill Point after every two Skills/Ults. Essential for SP-hungry teams.
But the Battle Isn’t Over	S (Standard)	Bronya’s signature cone works perfectly here. It offers Energy Regen, SP recovery on Ult, and a DMG buff for the next ally. If you have this, you might not need his signature.
Past and Future	A (F2P)	The budget option. It buffs the next ally’s damage. Simple, effective, but lacks the utility of the 5-star options.
Dance! Dance! Dance!	Situational	Only use this if you are attempting 0-Cycle clears and understand precise Action Value manipulation.

Team Comps: The Sunday Drivrers

While he specializes in Summons, HSR Sunday is a universal Hypercarry buffer. Here are the teams where he shines brightest.

The General Returns (Summon Hypercarry)

• DPS: Jing Yuan
• Buffer 1: HSR Sunday
• Buffer 2: Sparkle or Robin
• Sustain: Aventurine or Lingsha
• Why it works: Sunday solves the speed issue. Sparkle provides the Skill Points. Jing Yuan deletes the screen.

The Unlimited Blade Works (Double Advance)

• DPS: Blade or Jingliu
• Buffer 1: HSR Sunday
• Buffer 2: Bronya
• Sustain: Luocha or Huohuo
• Why it works: Because Sunday’s buffs last for turns rather than simple actions, you can stack his buffs with Bronya’s advance. You effectively give your DPS four turns in the first cycle with massive buffs active.

The Imbibitor Engine (SP Management)

• DPS: Dan Heng Imbibitor Lunae
• Buffer 1: HSR Sunday
• Buffer 2: Sparkle
• Sustain: Huohuo
• Why it works: If you have Sunday’s signature Light Cone, he becomes SP positive. Combined with Sparkle, you can spam DHIL’s Enhanced Basic Attack 3 constantly.

Conclusion

HSR Sunday is more than just a male Bronya. He is a mechanic-shifter who has future-proofed himself by tying his kit to the Summon archetype.

If you are a Jing Yuan main, he is a must-pull. If you are planning to pull for future Remembrance units, he is a must-pull. Even if you just want a reliable Crit DMG buffer who can cleanse debuffs and grant infinite turns, he is arguably the highest value Harmony unit released since Ruan Mei.

Prepare your Sacerdos relics. Tune your Speed to 134. The Order has arrived, and it is time to take your turn. And then take another one immediately after.

Frequently Asked Questions

Does Sunday work well with Firefly or Boothill?

No. Firefly and Boothill rely on Break Effect and Break DMG, which do not scale off Crit DMG. Since HSR Sunday’s primary buff is a massive Crit DMG steroid, his value is largely wasted on Break teams. Stick to Ruan Mei or Harmony MC for them.

Can I use Sunday if I don’t have Jing Yuan or Summon units?

Yes. He acts as a Better Bronya for traditional Hypercarries like Dr. Ratio, Argenti, or Acheron (at E2). His ability to provide Energy, Action Advance, and Crit buffs makes him universally strong, even without utilizing the specific Summon multiplier.

How does Speed Tuning work with Sunday?

You generally want Sunday to be -1 Speed slower than your DPS (e.g., DPS at 135, Sunday at 134). This allows your DPS to attack, then Sunday immediately pulls them up for a second attack. Avoid making him faster than your DPS unless you are running a specific Slow DPS build.

To secure Sunday and his signature Light Cone for the new Summon meta, competitive players often rely on a quick Honkai top up fo.r crucial resources. Alternatively, those wanting to skip the relic grind might consider a premium HSR account for sale that already features this powerful Harmony buffer and his team.