The battle between Roza Thaglas and the S-Ranked merman was coming to an end in the skies.
One aerial region over Baga Island was completely influenced by frost power, while the other had a strong presence of elemental water Skills executed in their most lethal forms.
However, if one looked closely, the region covered in frost was slowly but surely establishing its dominance over the water typhoons that protected a bruised and battered merman.
As a newly promoted S-Ranked being, Roza wasn't much of a challenge to veteran S-Rankers. However, she was more than enough for someone like Shir's S-Ranked subordinate, who also happened to have been promoted to S-Rank not too long ago.
Furthermore, Roza's Elemental Attainments were obviously influenced by Eren due to their special connection. One could say that she had access to more in-depth knowledge of the same subject she and her opponents both studied.