Lumi
Who is Lumi?
Lumi is a 4★ Electro Broadblade Hybrid who blends a ranged-and-melee combat style with a strong team-buffing Outro Skill. Her defining contribution is a 38% Damage Amplification granted to the next character on swap-out — one of the highest Outro buff values available on a 4★. While her long Concerto rotation results in higher field time than most support characters, and her Energy Regen requirements are demanding, she remains a competitive Hybrid buffer option for Electro or mixed teams looking for accessible DMG Amplification.
Kit Summary
Mid-range Electro strike that blends melee and ranged hitboxes; generates Forte stacks and Concerto Energy.
At max Forte, Lumi's Electro output shifts between ranged projectile and melee modes, allowing flexible positioning; empowered attacks have higher DMG multipliers.
Electro Liberation burst dealing AoE DMG to nearby targets; contributes to Concerto cycling but is secondary to her Outro role.
Swap-in Electro strike that immediately contributes Forte stacks.
Grants the next Resonator a 38% Damage Amplification for the duration of their stay on field — her key contribution and the reason she is used as a buffer.
Build Guide
🔮 Best Relic / Echo Set
Moonlit Clouds (5pc) — Energy Regen + 22.5% ATK buff to next character; covers her heavy Energy Regen needs while amplifying her swap-in teammate.
⚔ Best Light Cone / Weapon
Discord (4★ craftable Broadblade) — Energy Regen secondary; the best accessible solution to her high ER requirements. Upgrade: Verdant Summit (5★ Broadblade) — ATK% and Electro DMG Bonus passive for players running her as a secondary DPS rather than pure buffer.
📊 Substats Priority
👥 Best Teams
Electro Buffer: Lumi + Calcharo + Verina (Lumi Outro Amp for Calcharo; Verina ATK buff and healing)
Flexible: Lumi + any DPS + Baizhi (Lumi Outro Amp; Baizhi sustain; accessible F2P trio)
F2P Verdict
Standard 4★ — permanently available through standard Convene. Discord Broadblade is craftable and directly solves her Energy Regen issue. Lumi + Calcharo + Baizhi is a fully F2P team with strong endgame viability courtesy of the 38% Outro Amplification.
Frequently Asked Questions
Is Lumi's 38% Outro worth the long rotation?
For players without Lynae, Mornye, or Shorekeeper, yes. The 38% Damage Amplification is substantial and she is free to obtain. The cost is her longer field time compared to dedicated supports, so she works best with DPS resonators who need less setup time.
Can Lumi be played as a DPS?
Yes, though her damage output is average for a 4★. Her hybrid ranged-melee mechanic is fun but not optimised for pure damage. She is best played as a buffer whose personal damage is a secondary benefit rather than the main goal.
What makes Lumi different from other Broadblade supports?
Her dual ranged-and-melee playstyle gives extra flexibility compared to purely melee supports. Her Outro value is among the highest for accessible 4★ characters. The tradeoff is a higher field time commitment and tight Energy Regen requirements compared to lower-cost options like Sanhua.