Aikatsu Stars! Episode 28

While trick-or-treating for the Four Star Academy's Halloween Event, Ako Saotome, Tamaki Miyakōji, and Miharu Kasumi meet a book reading girl inside an unusually cold room, with both Ako and Tamaki struggling against the freezing temperatures. Miharu, however, looks completely unfazed by it, which Ako recognizes her for — only to reveal she was actually frozen solid that entire time after touching her.