Soda

A Fire Burst 1 Supporter used in Arena for Maid Spirit stacks, healing, and a stun Burst.
She is rare in main story and Raid lineups, and with healing on a 12-second interval, she only fits sections that truly need sustained healing.

Every 180 shots, Maid Spirit builds a Max HP stack, and each stack raises Max HP (up to 5 stacks, 10 seconds). Squeaky Clean Floor2 heals all allies, and healing grows when Maid Spirit is at max stacks.

Spring CleaningB deals damage and a 1-second stun to 2 random enemies, and raises the stack count of stackable buffs for all Fire allies by 1. Squeaky Clean Floor2's cooldown is 12 seconds, and Spring CleaningB's is 20 seconds.

Keep up rapid fire to build a Maid Spirit stack every 180 shots.
After reaching 5 stacks, time healing with Squeaky Clean Floor2.
Reload just before overheating or manually stop firing to avoid overheating.

Soda: Twinkling Bunny is a separate Nikke. In boss lineups, her slot can overlap with other Burst 2 units like Centi and Viper.

For healing output, set the Healing Cube, then the Vigor Cube (Max HP). Use the Resilience Cube to keep her Machine Gun firing.

In a healer and tank role, do not use Elemental Advantage damage or ATK lines. For CP and survival, consider DEF and Max HP lines.

For healing, raise Spotless Chair1 and Squeaky Clean Floor2 together. Spring CleaningB's stun and stack increase are the same even at 4.

Used for Burst 1 healing and stun in Arena and Special Arena. In bosses, Raids, and Special Interception, she is occasionally used as a substitute healer for Rapunzel or Pepper.

Maid Spirit stacks Max HP and self-survival.
After 5 stacks, Squeaky Clean Floor2's healing grows.
Spring CleaningB stuns enemies and raises Fire buff stacks.

She has no taunt, so she cannot absorb hits like a tank.
Squad healing only lands every 12 seconds, leaving gaps.
As a Machine Gun, her Burst Gauge contribution is low and she needs overheat management.