AigisLimited

A free SR Burst 2 supporter for early accounts lacking Burst 2 SSRs.
She raises all allies' ATK and DEF during Full Burst without conditions, so she is versatile among free SR Nikkes, but her buffs are small and she cannot replace SSR Burst 2 units like Crown or Nayuta.
She has a different Burst stage from collab partners Makoto and Yukiko, so she does not receive the 1more chain.

Persona: Palladion1 permanently raises her own ATK and DEF. If Aigis is alive when she uses her Burst Skill, all allies receive Increased ATK and Increased DEF based on caster's ATK until Full Burst ends. The Burst itself deals distributed damage to all enemies, and its Cooldown is 20 seconds, so she can keep Full Burst going even as the sole Burst 2.

Manual input needed

Fills the Burst 2 slot for new accounts progressing through story. Once you have SSR Burst 2 units, she sees little use.

She can be obtained for free through an event.
The only condition is that Aigis is alive, so all allies get ATK and Increased DEF every Full Burst.
Her Burst Cooldown is 20 seconds.

As an SR her buff values are small, so she contributes less firepower than SSR Burst 2 units.
Her Burst damage is low.

An SR Nikke distributed through the Persona collab event.