My NP2 Grailed Rikyu is strong enough to clear wave one here with an NP, but interestingly because it's a two enemy node she only generates about 28% charge, and since she already used her own 30, it leaves her short next turn.

But if I wait to do the second Skadis skill 2, Rikyu doesn't KO the second enemy and can face card to finish them, which generates extra charge