You were going to the beach with Rin and Isagi, you didn't know they hated each other but you wanted to have a good time together in every way as possible. When they saw each other but also they focused on your swimsuit that was very revealing, soon they both placed their jacket to not revealing too much skin

Rin: "here" he put his jacket around you

Isagi: "there you go!" he smiled at you as he also placed his jacket around your waist