It sure is hot outside. It's been Pangya's tradition to release new Gacha swimsuits every summer of the year. If you remembered how they handled the 2011 swimsuit version, then you will be familiar with how this Gacha set will be setup then.
In case you need a refresher, when you win a swimsuit set, you will receive a bonus item that is paired up with that specific character. Swimsuits will also have a separate top and bottom equipment for lots of customizable attires.