Roy left to go exploring the underwater dungeon. And hearing that there's a dungeon underwater, the two newcomers who never experienced much of the life outside the cult are interested to go there. But they are unable to swim, so they can't join Roy.
At first, they thought it would be great to explore another dungeon, but they were suggested to practice swimming instead. And before practicing swimming, it's good for them to have a swimsuit to wear. That's why they went shopping after Roy left them. Leaving only Ian, Ruby, and Penny behind. They are watching the house and the orphans. And it's also because they already have their own swimsuit and don't need to buy another one.
Victoria who decided to not join Roy, suggested for the girls to go to their usual store. It's a huge clothing store, built by using Roy's money and Victoria's idea of fashion. Some of the clothes are not common in this world.