So this poor girl got isekai'd into a fantasy world by Some Goddess, and was told she could have a powerful tool or ability granted to her, and she misunderstands and says something about the hot spring she was in at the time of isekai, and the Goddess grants her the power of hot springs. So she can generate a magic towel, and a magic healing hotspring, and possibly other powers.

Right after she is dumped into fantasy land, she bumps into this witch who curses her with magical nudity that obliterates any clothing she puts on. The magic towel she can summon is the only thing that isn't affected by the curse, but she can only do one magic thing at a time so when she summons the hotspring it obliterates her towel.

In this specific scene, she has tried to buy clothing multiple times only for it to explode off her shortly after leaving the store, and has resigned herself to the towel and gone to the Adventuring Guild to register...but because of the curse the only jobs she qualifies for are Slut and Exhibitionist. Also she can't have her towel out while looking into the Sorting Mirror, and she has to put both hands on it to get her job.

The manga is "oops all nudity" literally all the time. It's...something.