Build Analysis

Nekomata Double-Attack vs Solo: The Second Attack Ally Tax

Nekomata's passive and her Spring Embrace engine both scale when another Attack agent is on the team. In a double-Attack core her CRIT and damage spike; alone or in a Support/Stun core her value drops because the condition is unmet.

Double-Attack Core vs Solo Attack Slot

Double-Attack Core

Team: Nekomata + Ellen + Nicole

Two Attack agents satisfy her passive; Nicole enables both via Astral Voice and Abloom-style buffs. Nekomata runs her Basic/EX Special loop with the team-attack bonus active.

Pros:

Cons:

Rotation: Nicole assist + buff -> Nekomata Basic loop + EX Special -> Ellen cleans up

Solo Attack Slot

Team: Nekomata + Support + Stun

No second Attack ally, so her passive is inactive. She deals noticeably less and Spring Embrace underperforms.

Pros:

Cons:

Rotation: Generic Attack play without the team-attack bonus

Verdict

Run Nekomata only in double-Attack cores. If your team needs a Stun or specialized Support, a different Attack agent is usually better than a passive-less Nekomata.