This doesn't ask for your attention so much as your honesty. Six shorts called "Isshoni Bath Time," the Campanella girls in the tub, built to be shown off on a 3D TV in 2010 because that was the future everyone was buying that year. There's no story, no dialogue, no arc to track, and the people who rate it highly are the ones who never expected any of that. What it does have is craft: the rendering is clean, the presentation is polished, and it commits to its one idea instead of bolting on a plot as an alibi. That's exactly why it splits a room down the middle. Half the audience drops it in ninety seconds, the other half respects that it never once lied about what it was.
Shukufuku no Campanella Specials is a set of six short extras from 2010, released under the title "Isshoni Bath Time". Each one shows the main characters of Shukufuku no Campanella during a bath, and the footage was made to be viewed in three dimensions on a 3D television. Ordinary 2D versions exist for anyone without that equipment. As the Ecchi label suggests, these bath scenes are aimed squarely at fanservice.