Naval Battle Fairy Tail : Season 4 Episode 171

As the jubilant Fairy Tail members celebrate their victories, the other people, such as Sting, Kagura, and Milliana, are contemplating on their own concerns, while Yukino is enlisted as a sergeant under Arcadios' command. Meanwhile, the fourth day of the competitions comes to a start with an event, "Naval Battle", which involves the participants swimming in a giant water sphere and knocking the other competitors out.