Kanojo ga Flag o Oraretara Temporada 1 Episódio 6

Daimyouzamurai Mei, a mysterious transfer student, enters Hatagaya Academy class 1-F. It seems she has the same ability to see flags and manipulate them, just like Souta. Meanwhile, class 1-F is split into two groups based on their grades into swimming, and go on a trip to the ocean and the forest. For some reason, Soutas forced to join both trips...