Yuzuko, Yukari, and Yui explore their new high school for the perfect club to join.

Aikawa looks back on her first time meeting Yui and observes the trio and Yukari's lack of motivation. Later, the girls research Whales while their teacher comes to terms with her "Mom" nickname.

Yui and Yukari share stories of their first meeting in elementary school, Yuzuko listens with jealously. The conversation shifts from first meetings to death and memories.

As the newly formed Data Processing Club, the conversations range from how to grow your chest to ice cream.

Yuzuko plays around with some artist dolls before indulging in a little comic artistry herself.

Summer vacation finds the girls visiting the pool, having a sleep over, and bugging Yui. Yukari goes on an island vacation and sends her friends unique videos.

Po-ta-to. After discussing the theme of "Days of the week", the club approaches Mom in hopes of having a hotpot.

Yukari and Yuzuko enjoy the last days of their vacation at Yui's, again. And the subject of chocolates leads to today's topic: eyes.

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.

The girls invite Chiho to visit the Data Processing club, where she gets to know Yui a little better. After looking up ogres, the girls decide to go with Chiho and Kei to their friend Fumi Hasegawa's house.

The girls look into the various aspects of time, before pondering what they'd like to do in the future.

As summer vacation begins again, the girls spend most of their days at Yui's house, before later going to the beach.