Honkai: Star RailYukongBest build, teams and other guides

Yukong is a support with powerful buffs and breaking utility but is definitely one of the most challenging units to use. She requires more effort to use than the other Harmony characters, substantially so in fact, and sadly, despite all that effort put into playing her, she still performs below expectations compared to other buffers.

Let's go over her kit and this will explain why she struggles to find a spot in the current meta.

I’ll start with Yukong’s Talent, because it’s something of an outlier as far as expected support Talents. Every other turn, Yukong’s Basic attack gets Enhanced, dealing up to an additional 80% of her ATK at max Trace level, as well as increasing the Toughness damage by 100%! A Basic attack dealing damage potentially equal to 180% of a character’s ATK while still restoring a Skill Point is already exceptional, but the fact it deals twice as much Toughness damage as well is just insane. Yukong can end up contributing a huge amount of Toughness damage thanks to this one Talent, and because it actually has a decent multiplier, she can contribute pretty decent team damage as well.

Her primary method of buffing is through her Skill. Using it gives Yukong 2 stacks of Roaring Bowstrings, increasing the ATK of all allies by up to 80% at max Trace level, while stacks persist. She loses 1 stack on every ally turn after hers. This buff can be compounded further thanks to her Ultimate.

Yukong’s Ultimate targets a single enemy, and deals a very respectable amount of damage, up to 380% of her ATK at max Trace level. At the same time, if Roaring Bowstrings is still active, it will add up to 28% Crit Rate and 65% Crit DMG to the effects of Roaring Bowstrings at max Trace level. Both of these effects combined means Yukong can provide 80% ATK, 28% Crit Rate and 65% Crit DMG all by herself. This also has a remarkably high damage multiplier for a support, and since these buffs are all active before the Ultimate’s damage comes out, said Ultimate benefits fully from all of these fantastic effects.

However, you may have already noticed a glaring issue in that the very powerful Roaring Bowstrings effects will dissipate before your third ally turn, meaning one of your characters will never be affected by it. Ever. But it’s okay, you can do some pre-planning to make sure that Yukong is always acting immediately before your main damage dealer, and that way they’ll always be able to make use of her buffs, right? Ah but what if there are fluctuating SPD values due to various buffs and debuffs that many units and enemies have?

Well, this is where problems arise. You can definitely plan a team in advance and expect that Yukong’s buffs will always affect the correct allies, but realistically there are inevitably going to be extenuating circumstances that interfere with that plan. Allies may fall in and out of ideal turn order due to many different things, and it falls to the player to make the most out of whatever hand you’re dealt.

If you’re using characters that naturally alter their SPD or have mechanics like turn advance, such as Sushang or a Wind damage dealer using the Eagle of Twilight Line relic set, this is not that big of a concern actually, because even if a desync occurs, they will naturally realign themselves over time anyway. It’s a little more problematic if a desync occurs with characters that have set SPD values, but again, it’s not insurmountable. 

The way you can work around this is by paying attention to the specific wording of Yukong’s Skill; every ally turn will consume a stack, meaning any and all Extra Actions can be freely used as long as 1 stack of Roaring Bowstrings persists. This includes ally Ultimates, so especially if the majority of a character’s power is concentrated into their Ultimate, they can still benefit fully from Yukong’s buffs even if a turn desync occurs.

Keeping track of all of these aspects of Yukong’s kit is incredibly demanding, what with managing her powerful buffs efficiently and actually having meaningful uses of her Ultimate, while still trying to find good uses of her equally powerful Talent. It is not an understatement to call her the most difficult-to-play unit to date. Even Qingque is simple by comparison, but as with our favorite mahjong gremlin, the effort is well worth the output.

Yukong’s Bonus Traces are very impactful and have a big effect on her performance. Her A2 allows her to resist 1 debuff once every 2 turns. This means any debuff at all, be it a DoT or a crowd-controlling debuff like Imprisonment, so this can potentially prevent the aforementioned turn desync from occurring from Yukong’s side at least.

Her A4 increases all Imaginary DMG dealt by all allies by 12% as long as she’s alive, meaning she’s going to be a good pairing with Imaginary damage dealers like Welt, and this even goes a long way to improving her own personal damage contribution. 

The most impactful Bonus Trace is her A6. When Roaring Bowstrings is active, Yukong regenerates 2 additional Energy every time an ally takes action. Note it says action and not turn, meaning Extra Actions and Ultimates will also contribute to this Energy regeneration, even Yukong’s own Ultimate usage, and this is actually a very significant amount of Energy coming back to Yukong over the course of a fight.

Yukong’s Eidolons are pretty important - especially E6 provides notable quality-of-life improvements.

Sadly, in the current meta, Yukong has fallen from grace (not like she was popular back in the day either). She's basically only used with Imbibibor Lunae as every other damage dealer has better first-pick and second-pick options for their Harmony support of choice. Why is that? Mainly because of how hard she is to use compared to what she brings to the table. Other Harmony provided similar or stronger buffs for hundred times less effort needed.