|Building Seven: The Apartment Complex's Pool Opening|
|Season 1, Episode 7|
|Rōmaji||Nana Gōtō Danchi de Pūru Biraki|
|Air Date||August 20, 2015|
|Ending||Let a good day|
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|Danchigai Episode List|
When Uzuki and Satsuki have pool class, it reminds Mutsuki and Yayoi about their time. The two sisters try on their swimwear indoors. With Yayoi's insistence, she has Haruki join them. The three spend time in a small kiddy, inflatable pool much to Haruki's confusion.