“If You Want To Lose Weight, Then Stop Eating and Start Moving”
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…
I wonder if Sacchan has a thing for Otae instead of Gin-san. It would seem likely by the amount of times she's been sneaking in her house instead of the yorozuya.