This page drawn by me, CG grayscales by JustNoPoint.
Nuada is referring to when Chase fell into the river in chapter 4… a much-belated explanation. Yes, she really can't swim (in her source fiction). Although fan art loves to show her in a skimpy swimsuit.
Read the companion comic FIGHT 1; both stories take place in the same world. Currently I will be updating F2 more; Bittertea has not quit on drawing the F1 chapter, but her computer is currently inaccessible to her.