For future reference, just so you don't need to zoom in: Areolae here refers to Wendi's areolae, which you can see above the border of the water. Steam censor refers to the steam covering Vivio and Cinque's crotches. Aqua scrunchie, red scrunchie, and hair scrunchie refer to the scrunchies on Nanoha and Lindy's hairs. Convenient arm refers to Subaru and Vivio's arms.