
Lumi
Free—Lumi is Resonance Skill amp support. Liberation “Squeakie Express” deals a focused attribute damage hit as the named setup tool. Best with Carlotta / Xiangli Yao / Skill carries. Skill DMG Outro only pays if the next Resonator Skill-dumps. Skip when Taoqi or a premium Skill amp already covers the seat.
Lumi is a 4★ Electro Support who fights with a Broadblade. Liberation “Squeakie Express” deals a focused attribute damage hit as the named setup tool. Forte “Signal Light” enters Red Spotlight Mode. Outro “Escorting” amplifies the incoming Resonator’s damage on Outro handoff.
Weapon
Best-in-slot 5★ Broadblade
Signature / premium option when available — largest personal damage or utility spike.
Echo Set
Moonlit Clouds (5pc)
Default Sonata match for this role/element package.
4-Cost
Energy Regen
Main stat
3-Cost
Electro DMG / ATK%
Main stat
1-Cost
ATK%
Substats
Energy Regen > ATK% > CRIT
“Escorting” — amplifies the incoming Resonator’s damage on Outro handoff.
“Squeakie Express” — deals a focused attribute damage hit as the named setup tool. Level first.
“Signal Light” — enters Red Spotlight Mode.
Setup and energy / Concerto generation.
Entry heal/buff — useful but not always the first upgrade.
Swap to Lumi → “Searchlight Service” setup → “Squeakie Express” / “Signal Light” buffs → “Escorting” to amplify the on-fielder.
Refine timings once you learn Concerto breakpoints for your specific team.
CRIT Rate / ATK%
Any well-refined 5★ Broadblade with CRIT or ATK.
Why it works —Flexible premium stand-in while farming signature.
ATK% / Energy Regen
Accessible Broadblade option for early investment.
Why it works —Best F2P path — refine and swap off once a 5★ lands.
Jinhsi core with Lumi: Verina is the fast generalist heal + ATK / DMG amp seat. Lumi opens Stellarealm / heals, then Jinhsi takes the buffed damage window.
Jinhsi is the on-fielder this shell is built around — Lumi keeps them alive and buffed through Liberation.

Lumi enables this shell — keep Outro / setup online every rotation for Jinhsi + Verina.
Verina is the fast generalist heal seat — ATK-scaling heals plus 15% team DMG Amplify with a short Concerto cycle for Jinhsi.
Yellow Light: Basic Attack Summon Squeakie to shoot three shots in a row, dealing Electro DMG. Yellow Light: Sprint Dodge to perform Sprint and enter Zoom Mode. Lumi is unable to Dodge when performing Sprint. Yellow Light: Zoom When in this state, automatically shoot Glitters at a locked-on target and deal Electro DMG, considered Basic Attack DMG. Yellow Light: Plunging Attack Consume STA to perform a Plunging Attack, dealing Electro DMG. Red Light: Basic Attack Perform up to 3 consecutive attacks, dealing Electro DMG. Red Light: Heavy Attack Consume STA to strike the ground with Squeakie, causing an impact dealing Electro DMG, considered Basic Attack DMG. Red Light: Plunging Attack Consume STA to perform a Plunging Attack, dealing Electro DMG. Red Light: Dodge Counter Use Basic Attack right after a successful Dodge to attack the target, dealing Electro DMG.
Pounce When in Yellow Light Mode, use Resonance Skill to perform Pounce, which consumes STA to pounce on the target before switching to Red Light Mode. Lumi will perform a Pounce without STA cost when switched onto the field. Rebound When in Red Light Mode, use Resonance Skill to perform Rebound, which consumes STA to leap backward and attack the target before switching to Yellow Light Mode. Yellow Light Mode Perform ranged attacks when in Yellow Light Mode. Red Light Mode Perform melee attacks when in Red Light Mode.
Throw the giant Squeakie at the target, dealing Electro DMG.
Enter Yellow Light Mode and attack the target, dealing Electro DMG.
The incoming Resonator has their Resonance Skill DMG Amplified by 38% for 10s or until they are switched out.
When the target's Off-Tune Level is full, the Resonator may cast Tune Break on the target.
Energized Pounce When Yellow Light Spark is fully recovered, replace Resonance Skill with Resonance Skill Energized Pounce that deals Electro DMG and enter Red Spotlight Mode. The DMG dealt is considered Basic Attack DMG. When in Red Spotlight Mode, the DMG Multiplier of Red Light: Basic Attack and Red Light: Heavy Attack is increased, with an extra amount of Sparks recovered. Red Spotlight Mode ends after performing altogether 4 Basic Attacks and/or Heavy Attacks. Energized Rebound When Red Light Spark is fully recovered, replace Resonance Skill with Resonance Skill Energized Rebound that deals Electro DMG and enter Yellow Spotlight Mode. The DMG dealt is considered Basic Attack DMG. When in Yellow Spotlight Mode, Glitter is replaced by Glare, with an increased DMG Multiplier and an extra amount of Sparks recovered. Yellow Spotlight Mode ends after shooting 6 Glares. Laser Casting Outro Skill consumes all Sparks obtained in the current mode. Laser can be cast when the amount of consumed Sparks is greater than or equal to 25, dealing Electro DMG. The DMG dealt is considered Basic Attack DMG. Every 25 Sparks consumed generates 1 extra Laser beam, up to 4 Laser beams. Yellow Light Spark Lumi can hold up to 100 Yellow Light Sparks. Lumi obtains Yellow Light Spark under the following conditions: When Yellow Light: Basic Attack hits the target; When Glitter hits the target; When Glare hits the target; When Resonance Skill Energized Rebound hits the target; When casting Intro Skill Special Delivery. Red Light Spark Lumi can hold up to 100 Red Light Sparks. Lumi obtains Red Light Spark under the following conditions: When Normal Attack Navigation Support hits the target in Red Light Mode or Red Spotlight Mode.
Gain 10% Electro DMG Bonus when in Red Light Mode.
Casting Energized Pounce or Energized Rebound increases ATK by 10% for 5s.
Has a chance to produce special dishes when cooking.
After casting Energized Rebound, additionally recovers 60 STA within 3s.
Is it worth getting?
Small 4★ bump: After casting Energized Rebound, additionally recovers 60 STA within 3s. Take Wavebands when they appear on rate-up; never the reason you pull the banner.
Energized Pounce and Energized Rebound ignore 20% of the target's DEF.
Is it worth getting?
Meaningful upgrade: Adds RES / DEF shred or a large DMG Bonus clause. Strong when it lands, but weigh it against a new limited teammate.
The DMG of Resonance Liberation Squeakie Express is increased by 30%.
Is it worth getting?
Situational S3: Adds RES / DEF shred or a large DMG Bonus clause.
Gain 30% Basic Attack DMG Bonus.
Is it worth getting?
Side-grade: Adds RES / DEF shred or a large DMG Bonus clause. Happy if it drops; not a planned stopping point.
When Spark is fully recovered, Laser DMG Multiplier is increased by 100%.
Is it worth getting?
Late luxury: When Spark is fully recovered, Laser DMG Multiplier is increased by 100%. Grab it if you overshoot toward S6 — never hard-pity for S5 alone.
Casting Resonance Liberation Squeakie Express increases all team members' ATK by 20% for 20s.
Is it worth getting?
Whale ceiling: Raises party ATK from a Stellarealm / team aura. Only chase if Lumi is your dedicated main and S0–S2 already feel finished.
Lumi is designed to work at S0. Extra Sequences are comfort from rate-up dupes, not requirements.
Not sure Lumi is right for you? Compare against same-Attribute Support Resonators.

You need a Electro Support and Yuanwu's kit matches your account gap.