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Preemptively casts 0.5xATK down for 1 turn. She always starts on 1CD and attacks for 2376 on 1 CD. Under 20%HP Nami will blind you for 6 turns then turn tail and run. Grunts always start on 2 CD and hit hard.
As a preemptive, the grunts will bind both captains for 1 turn.
The first turn she attacks, Robin will use her special which will paralyse you for 1 turn. Then, she switch to attacking every turn for 3,716. If she gets under 20% HP, she will paralyse all the crew again for 2 turn and from that point on go back to attacking every turn for 3,716. Her specials do not trigger if she is delayed. Grunts have 1-2 CD and hit for ~2-3.5k.
Preemptively you get paralyzed for 1 turn AND they have 2 turn immunity. Nami and Robin attack for 2.376 and 3,716 res[ectively on a 1 turn cool-down. Robin has a <20% trigger identical to the one described above. Grunts have 1-2 CD and hit for ~2-3.5k.