Omake Gif Anime - Strike Witches - 501-butai Hasshin Shimasu! - Episode 10 - Hartmann Squished

Hartmann's witch power generates a cooling effect, making her very popular on hot days.

Lucchini and Shirley sought out the cooling power of Hartmann, but she can only use her power for so long. The other girls objected to their stripping down, but Yoshika doesn't seem to mind being closer to Shirley in such a state.