A Heart-Pounding Summer Holiday (E10)

Kohana and the rest of the committee arrive at a villa on the beach to celebrate the end of the Hoshi Festival. With sidelong glances, their always languid advisor Chieri watches them excitedly frolic about. When Kohana finds a secret greenhouse, Chieri tells her stories of her mother Sakura from when they were students. Kohana and her friends feel a great sense of relief and sadness now that everything is over. Now that the festival is over, the executive committee is to disband this day-- (Crunchyroll)