The World Bows Down Before My Flames, Vol. 2 (novel) — Hiyoko Sumeragi

In another world, the unfortunate but beautiful Homura and her group have adapted to their new surroundings and are causing chaos everywhere they go. During an investigation of a monster attack in a port town, they end up having a standoff with sharks on the beach and dealing with a demon-slaying mission in a neighboring fishing village.  Things only get more complicated with the arrival of the daughter of a tyrannical lord. As the group's mission becomes even more challenging, their response comes to an unexpected twist: a beachside vacation in school swimsuits!?