It's cute how both Shamiko and Momo worried about their weight, because they are too gay for each other, while actually not having any issue with the other's weight at all.
Princess carry seems to be one of Shamiko's favorite fantasies, and much like making Momo smile, this is a worthy goal indeed!
I just hope Shamiko will be convinced to stop this weight loss stuff quickly. She used to be skin and bones and malnourished. Gaining 7 kilos put her into a healthy weight range, just like Joshua was trying to narrate. Hang in there Shamiko... become a healthy demon, even if you stay weak!