After the defeat of Aizen, Ichigo has lost his superpowers but not his skills so he's been hiring himself out to any sports team looking for a strong player. When Nagisa Hazuki approaches Ichigo to join the Iwatobi High School Swimming Club, something piques Ichigo's interest....

For a prompt from the lovely Holly: The Free! anime featuring Tobirama as a swimmer, with a water addiction like Haruka - and the same penchant for undressing at the first sight of water. Cue Madara blushing and flailing, while Tobirama gives zero shits.