It’s 2026, and Honkai: Star Rail has expanded its universe dramatically, but some gear remains as reliable as a well-worn pair of boxing gloves. One of those classics is the Champion of Streetwise Boxing relic set, a powerhouse for Physical damage dealers that still punches way above its weight. Think of it like a coiled spring inside a punch bag – every hit you take or dish out compresses that spring a little more, until the recoil unleashes a massive force. That’s exactly how the four-piece bonus feels when you stack it up to five times.

Before we dive into the best fighters to equip this set, let’s look at what it actually does. The 2-piece bonus gives a straightforward 10% increase to Physical Damage. The 4-piece is where the magic happens: every time the wearer attacks or gets hit, their ATK increases by 5% for the rest of the battle, stacking up to five times. That’s a potential 25% ATK boost just for doing what combat characters do best – trading blows. It’s like a boxer who gets stronger with every round, feeding off the rhythm of the fight.
Even in 2026, with all the new relic sets that have been released, Champion of Streetwise Boxing remains a top-tier choice for certain Physical units. Let’s meet the fighters who wear it like a second skin.
Clara: The Relentless Counterpuncher

| Unit Rank | Path | Damage Element |
|---|---|---|
| 5-Star | Destruction | Physical |
Clara isn’t just a candidate for this set; she’s practically its poster child. Her entire gameplay loop revolves around being attacked and countering with Svarog. Equip her with the 4-piece, and she transforms into a bear trap wrapped in silk – enemies step on her, and they get a crushing response amplified by escalating ATK. Her ultimate, Promise, Not Command, taunts foes, making them far more likely to hit her. Each hit she endures stacks the relic’s bonus, and each counterattack she performs adds another stack from the attacking side. It’s a feedback loop of aggression that feels like a pendulum swinging ever wider, gathering destructive momentum with every arc.
Argenti: The Blooming Lancer

| Unit Rank | Path | Damage Element |
|---|---|---|
| 5-Star | Erudition | Physical |
Argenti might look more like a knight of beauty than a streetwise brawler, but he uses this set with frightening grace. His kit already boosts his own Crit-Rate by up to 10% when attacking enemies, and his area-of-effect Physical damage ensures he’s constantly hitting multiple targets. With Champion of Streetwise Boxing, every sweep of his spear not only reaps a field of foes but also plants seeds of growing ATK. Picture a poet who recites verses faster and more passionately as the audience applauds – Argenti’s attacks become more potent with each standing ovation from the relic stacks. The 4-piece bonus pushes his ultimate, For In This Garden Supreme Beauty Bestows, into genuinely apocalyptic territory.
Sushang: The Swift-Footed Blade Dancer

| Unit Rank | Path | Damage Element |
|---|---|---|
| 4-Star | Hunt | Physical Damage |
Sushang is a single-target specialist who plays like a metronome on turbo mode. Her Sword Stance triggers additional hits, and when she breaks an enemy’s Weakness, she gains a Speed boost. This combination lets her rack up attacks quickly, and each strike raises the ATK percentage from the relic. Imagine a hummingbird with a razor – its wings beat so fast you can barely see them, and each flutter draws a tiny drop of nectar that eventually fills a whole flower. Sushang’s Speed-enhanced turns fill her ATK meter just as rapidly, especially if you pair her with accelerators like Bronya, Hanya, or Asta. Within a few cycles, she’s hitting like a freight train despite her 4-star rarity.
Hanya: The Balanced Support Pugilist

| Unit Rank | Path | Damage Element |
|---|---|---|
| 4-Star | Harmony | Physical Damage |
Hanya might be a support character, but she’s no delicate flower. To maintain her powerful Burden debuff and generate energy for her ultimate, she needs to attack regularly. The 4-piece set bonus turns this requirement into a hidden strength. Every basic attack and skill cast adds another layer of ATK, turning her into a support who can also throw a mean right hook. It’s like a conductor who not only directs the orchestra but occasionally picks up a violin to play a solo – her supportive melody gets punctuated by increasingly violent bow strokes. While her main job is boosting allies’ Speed and damage, with full stacks she can genuinely punch holes in enemy lines.
Luka: The Bleeding Street Fighter

| Unit Rank | Path | Damage Element |
|---|---|---|
| 4-Star | Nihility | Physical Damage |
Luka is a slightly different beast. His damage comes from both direct hits and the Bleed damage-over-time effects he inflicts. However, here’s the catch: the 4-piece ATK bonus only triggers on attacks hitting or being hit – not on DoT ticks. This means Luka can’t stack the full effect as efficiently as Clara or Sushang. But don’t count him out. The 2-piece alone provides a juicy 10% Physical Damage boost that elevates both his raw punch and the base damage of his Bleed. If you want to invest fully, a 4-piece can still work if you actively weave in basic attacks, but it’s like pouring high-octane fuel into a hybrid engine – some of it goes to waste. Many players in 2026 opt for a 2-piece Streetwise Boxing combined with a 2-piece set that boosts ATK or DoT, finding the perfect middle ground.
So there you have it. Champion of Streetwise Boxing is a relic set that rewards aggression, endurance, and a deep understanding of your character’s rhythm. Whether you’re letting Clara absorb hits like a living fortress, or letting Sushang dance through enemies with blistering speed, this set remains a staple in the ever-expanding toolbox of Honkai: Star Rail. Grab it from the Cavern of Corrosion, roll those substats, and turn your Physical damage dealers into true champions.