Kenkou Zenrakei Suiei-bu Umishou EP6 - No!

The Ninogawa houseraft reconstruction is proceeding smoothly. On the way to school, Amuro meets Maaya Nanako, a model and competitive swimmer. They are soon surrounded by a crowd which includes Kaname, who apparently was childhood friends with Maaya (although they have differing memories of said childhood). She has transferred to Umishou and will be on the swim team. It soon becomes apparent that Maaya is a master manipulator, particularly of men, although Kaname is apparently immune. At swim practice, Maaya soon has the other male members of the team wrapped around her finger. Because of her own inadequate feelings compared to the other female members of the team (who are all bustier than she is), she convinces the boys to build a new changing room for her alone. It all goes rather poorly for then entire team.