Yuyushiki

After the girls enter their second year and reminisce about their past year at school, they look up some facts about water. Meanwhile, Chiho's friend Kei Okano, who is usually cold towards Yui due to Chiho's fondness of her, changes her opinion of her after she helps to pay for some snacks at the convenience store. Later, the girls try to get to know Yoriko a little better.