Ple-Sen
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I think it would be best to lead the sorceress Nebka in the very back (or almost the very back). So she can take everyone out with her beam. Maybe lead her as the second to last, so Ayano can close the procession. Your dodge is better, in case of an attack from the rear. And you won't get much out of healing anyway. If someone manages to break through the spiritual barrier, you won't have enough health for even one average attack.