Luka — Honkai Star Rail Character Guide

Overview

Single-target DoT/Break hybrid who inflicts Bleed scaling with enemy Max HP and amplifies team damage via Ultimate. Self-procs Bleeds with Enhanced Basic ATK for consistent damage, but strictly limited to single targets and outclassed in endgame.

Single-target Physical Nihility DPS who inflicts Bleed via Skill (24% enemy Max HP, capped at 338% ATK) and self-triggers it with Enhanced Basic ATK. Manages Fighting Will stacks to unlock Enhanced Basic ATK, which delivers 3 Direct Punch hits followed by Rising Uppercut that forces an immediate 85% Bleed proc. Ultimate provides 2 Fighting Will stacks, deals 330% ATK damage, and applies a 20% DMG Taken debuff for 3 turns. Builds around ATK, Effect Hit Rate, and SPD rather than CRIT stats.

Key Mechanics

• Bleed DoT deals 24% of enemy Max HP per turn but is capped at 338% of Luka's ATK. Against high-HP enemies, Break Bleed (which scales with Break Effect instead) can eventually exceed Skill Bleed damage.
• CRIT stats are worthless — all meaningful damage comes from Bleed DoT and Break Bleed, neither of which can critically strike. Stack ATK, Effect Hit Rate (67% threshold), SPD, and Break Effect instead.
• Enhanced Basic ATK forces a Bleed proc via Rising Uppercut, allowing Luka to frontload DoT damage rather than waiting for turn-start ticks. This is the primary reason Kafka synergy is so strong — she triggers these Bleeds again externally.
• The 20% DMG Taken debuff from Ultimate lasts 3 turns and benefits the entire team's damage, making Luka function as a hybrid DPS/debuffer.
• In Physical-weak content, both Skill Bleed and Break Bleed can be active simultaneously on the same target, doubling the value of Bleed trigger effects from Kafka or Rising Uppercut.

Best Luka Teams

DoT Trigger

Pairs Luka with Kafka to repeatedly activate his Bleeds for massive damage. Kafka's Skill and Ultimate trigger all active DoTs on all enemies, and in Physical-weak content both Skill Bleed and Break Bleed can be active simultaneously for double triggers. Each trigger deals 24% enemy Max HP (capped at 338% Luka ATK), so increasing trigger frequency is the primary damage lever. E6 Luka adds up to 48% extra Bleed procs per Enhanced Basic cycle that Kafka also triggers. Jiaoqiu adds a third DoT source and a DMG Taken debuff.

• A-tier: Luka, Kafka, Jiaoqiu, Huohuo
• B-tier: Luka, Kafka, Sampo, Gallagher

Physical Break

Focuses on Physical Break Bleeds rather than Skill Bleeds. Break Bleeds scale with Break Effect rather than being capped at 338% ATK, so they outscale Skill Bleeds against high Max HP targets. Fugue enables consistent Super Breaks and repeated Physical Breaks through Exo-Toughness, while Ruan Mei increases Break Efficiency and extends Break windows. Can also include Boothill — his higher Break Effect stat generates stronger Break Bleeds, and Luka triggers them with Enhanced Basic ATK. Luka's 20% Ultimate debuff amplifies all Break damage.

• B-tier: Luka, Tingyun • Fugue, Ruan Mei, Gallagher
• A-tier: Luka, Boothill, Tingyun • Fugue, Gallagher

Best Luka Teammates

DPS Partners: Kafka (S+), Boothill (C), Black Swan (A), Sampo (C)

Amplifiers: Tingyun • Fugue (C), Silver Wolf (A), Jiaoqiu (S+), Ruan Mei (B), Robin (B), Pela (C)

Sustains: Huohuo (S+), Gallagher (A), Luocha (B), Fu Xuan (B), Aventurine (C)

Luka Investment Priority

1. E4 — Permanent 15-20% ATK buff from Fighting Will stacks scales both Bleed cap and Break Bleed damage — most impactful eidolon per cost for Luka.
2. E1 — Consistent 15% DMG bonus whenever Luka acts against a Bleeding target, active for virtually every action in his rotation.
3. E6 — Substantially increases Bleed procs per Enhanced Basic ATK cycle, providing largest single damage spike — but only meaningful in DoT teams with Kafka.

Luka Relics and Stat Targets

Recommended: Prisoner in Deep Confinement with Revelry by the Sea

Stat targets: Effect Hit Rate 67%, SPD 134 / 143 / 160, ATK 2400-2800+, Break Effect 0-120%

Main stats: Body: Effect Hit Rate > ATK% · Feet: SPD · Sphere: Physical DMG > ATK% · Rope: Break Effect > ATK%

Best Luka Light Cones

• Good Night and Sleep Well (Best in Slot): Best overall option for Luka. Provides stacking DMG% for each debuff on target (up to 48% at S5 with 3 debuffs), applying to DoT as well. Luka's Bleed and Ultimate debuff provide 2 debuffs by default — pair with Jiaoqiu or Black Swan for a third. Requires sustaining 3 debuffs for maximum value.
• Patience Is All You Need: Alternative that does not require 3-debuff uptime. Provides flat DMG% and SPD stacking. Applies Erode (Shock equivalent) which contributes a 3rd debuff for Good Night without changing equipment. More consistent in teams lacking additional debuffers, and synergizes with both DoT and Break playstyles.
• Eyes of the Prey: Best 4-star budget option. Provides Effect Hit Rate (up to 40% at S5) to reliably land Bleed, plus 48% DoT damage increase at S5. Excellent for reaching the 67% EHR breakpoint without sacrificing offensive relic substats. Highly accessible from standard banner.
• Fermata: Craftable option providing Break Effect and conditional DMG increase against Shocked or Wind Shear targets. Requires Kafka or a Wind/Lightning DoT teammate to activate, limiting team flexibility. Break Effect bonus benefits Break Bleed damage specifically. Viable only in coordinated DoT setups.

Luka FAQ

Who works best with Luka in HSR?

Luka's best team options include Kafka, Jiaoqiu, Huohuo. StarGuide rates teammates by role and composition fit so the recommendation reflects how the character is actually played.

What relics should Luka use?

Luka's recommended relic setup is Prisoner in Deep Confinement with Revelry by the Sea, with stat targets around Effect Hit Rate 67%, SPD 134 / 143 / 160, ATK 2400-2800+.

What is the best light cone for Luka?

Good Night and Sleep Well is the top listed light cone for Luka. Best overall option for Luka. Provides stacking DMG% for each debuff on target (up to 48% at S5 with 3 debuffs), applying to DoT as well. Luka's Bleed and Ultimate debuff provide 2 debuffs by default — pair with Jiaoqiu or Black Swan for a third. Requires sustaining 3 debuffs for maximum value.

How should I invest in Luka?

Luka's first listed investment priority is E4. Permanent 15-20% ATK buff from Fighting Will stacks scales both Bleed cap and Break Bleed damage — most impactful eidolon per cost for Luka.

Important Notes

• Strictly single-target with no AoE capability — largely useless in Pure Fiction and weak in multi-target Memory of Chaos phases before the boss.
• Skill Bleed capped at 338% ATK at max level — against very high Max HP enemies, Break Bleeds eventually outscale Skill Bleeds, but require Break Effect investment to reach those values.
• Outclassed by modern DPS characters in all endgame modes at current patch — viable with proper partners but not meta for competitive clears.
• A2 dispel only removes 1 buff per Skill, making it unreliable against enemies with multiple self-buffs.