HSR Currency Wars: Time-Stop Loop Teamcomp with Sunday & RMC

Hey, Trailblazer! Thought you might be immersed in the Currency Wars for weeks, huh? If you thought the Aglaea "Wheelchair" speed build was the peak of the event, think again. A new strategy has emerged that fundamentally breaks the rules of turn-based combat.

Dubbed "The Eternal" (or The Zero-Action Loop), this setup allows your team to take infinite turns without consuming a single point of Action Value (AV).

By combining Sunday, the Remembrance Trailblazer, and Huohuo, you can stack infinite damage, ignore enemy mechanics, and clear Difficulty A8 effortlessly—even with low investment.

Core Mechanic: Why It Works

Normally, Sunday and the Remembrance MC suffer from "short legs"—they have powerful action-advance abilities but are limited by Energy or speed caps. However, in Currency Wars, their kits combine with the new mechanics to create a literal Perpetual Motion Machine.

The concept is simple: Sunday advances the RMC, the RMC advances Sunday, and they do this forever.

The loop: Sunday uses Skill to advance RMC's action → RMC uses Ult to advance Sunday's action.

While this happens: Sunday Ults himself + RMC (Mem) acts → Huohuo fills up and batteries the team → Sunday & MC regain Ults → Repeat.

 

The Squad

Sunday (Frontline - Slot 1): He is the engine. His Skill lets the RMC immediately take action. Crucially, in this mode, Sunday's Ultimate grants buffs and specifically refunds extra Energy to the character in the first slot.
By placing Sunday in Slot 1 and targeting himself with his Ultimate, he batteries himself for at least half his energy bar instantly, keeping the chain alive.

Remembrance Trailblazer (RMC): The driver. Once you use their Ultimate, Mem (the Memo-sprite) enters the field. Mem acts frequently in this mode and can advance Sunday's action. Every time Mem uses "ORA!" to deal damage or advance an ally, it counts as a frontline (on-Field) action, which charges Huohuo's Ultimate.

Huohuo (Backline - Slot 1): The fuel. Huohuo gains Energy every time a frontline character acts. When full, she charges the entire team. She is the core battery that prevents the loop from breaking.

Tingyun (Backline - Optional): Your safety net. She charges one on-field character automatically. If your loop feels unstable or your gear isn't perfect yet, she smooths out the rotation.

 

Key Gear

Perpetual Engine (Crucial)

Effect: When entering combat, activates the wearer’s Ultimate. After using 3 Ultimates, activates their Ultimate again.

This jumpstarts the loop immediately. You need at least one of these (ideally on Huohuo) to kickstart the energy cycle. If you manage to find two (one for Sunday, one for Huohuo), your energy generation becomes so high that you literally cannot run out of steam.

Anti-Grav Boots

Effect: Stacks Speed upon acting.

Since your team takes infinite actions, items that stack stats "per turn" or "per action" will stack to infinity before the enemy even moves. By the time you decide to let the attack go through, your stats will be game-breaking.

 

The Ways to Win

Once you have established the loop, you have two options for closing out the fight:

The Aglaea "Wheelchair"

If you have a built Aglaea, she is the primary beneficiary. While Sunday and RMC play ping-pong with turns, Aglaea stands there gaining infinite Energy from Huohuo and infinite stats from her gear. You simply weave Aglaea's Ultimate into the loop to delete the boss in one hit.

Don't know how to build Aglaea? Check out our Currency Wars Best Teams Guide for the full breakdown on her "Wheelchair" gear setup and why she is the T0 carry.

The "I Don't Have a Carry" Method (RMC Carry)

If you didn't roll Aglaea, or you're just bored of her, don't worry. Remembrance MC is actually a high-damage dealer in this mode thanks to the special "ORA!" skill. You can simply maintain the Sunday/RMC loop indefinitely. It will take more clicks and more time, but since the enemy cannot move, you will eventually whittle them down to 0 HP using just the Trailblazer's damage.

Note: This effectively makes Sunday + Huohuo + RMC a plug-and-play "Cheat Engine" that fits into almost any team composition if you get stuck.

 

Difficulty A8 Optimized Progression Route

You don't need to force this loop from turn one. It's better to transition into it. Here is the ideal "Smooth Sailing" route:

Stage 1-4 (The Foundation)
Immediately push to Level 5. Your main priority here is to find Hyacine, Tribbie, Tingyun, Huohuo, and Aglaea. This lineup activates the 3 Energy and 3 Day Demigod bonds, giving you both the economy to roll and the energy to fight. Crucially, you must hard roll for Anti-Grav Boots for Aglaea right now; as long as Aglaea has her shoes, she will carry you through the first two planes easily.

Stage 1-5
Level up to Level 6 before the round ends. Look specifically for Qingque to complete the 3 Xianzhou bond. 

Plane 2
This is where the magic starts. Push to Level 7 and find Sunday, and then continue to Level 8. Find the Remembrance Trailblazer (RMC). Once you have these two, you can begin assembling the infinite loop.

Plane 3
Finally, push to Level 9 to find Cyrene. While the loop works without her, Cyrene significantly caps out your damage ceiling, making the manual clearing process much faster.

 

Important Tips (Pros & Cons)

This strategy is essentially an invincibility cheat code. Enemies cannot kill you if they never get a turn, and because you control the action flow, you can bypass specific enemy triggers completely. It also scales infinitely (you can stack damage forever before landing a hit) and requires very low investment since you don't need Eidolons.

However, be warned: this strategy is physically tiring. While the battle takes 0 "in-game" seconds, it might take a while in "real life" because you are taking so many manual turns. It’s hard on your fingers. Treat this as a "Panic Button"—if you have a God-run, just play normally. But if you run into a boss you can't beat, switch to the loop and manual your way to victory.

 

Summary

The "Eternal" Loop transforms Currency Wars from a tactical auto-battler into a sandbox where you become the God of Time. By combining Sunday and RMC's turn manipulation with Huohuo's backline battery, you create a Zero-Action environment where you can stack infinite stats. Whether you use Aglaea to nuke or MC to chip away, this strategy guarantees a win—as long as your fingers can keep up!

For more in-depth guides, tier lists, and tips, head over to our LDShop HSR Hub. And If you need the budget to grab the units that make these teams shine, you can top up Oneiric Shard through LDShop. Enjoy fast delivery, safe trades, and consistently low prices so you can focus on winning your rolls.