Kagura has gotten fat because of her recent degenerate lifestyle. She goes to Otae for advice, but Otae has also gotten fat from eating too much ice cream. Satchan laughs at the both of them for becoming fat, but she has also gotten fat… The three spurred to do something about their situation. They join a famous fasting dojo in town. There they run into Otose, Catherine, and even Kyubei…
With a body like that, your lover won't be able to carry you like a princess.
Con un cuerpo así, su amante no podrá 
llevarlas como si fueran princesas.
Com um corpo desses, seu amado não
 vai conseguir carregá-las no colo.