the marisa doesn't look like it's really lost any mass... the sesvered front half is basically a yukkuri on its own, given the size of the facial features.
Kou kinda messed up this one, while it doesn't look like this, Marisa basically became a cripple since her footsie was left in the "other half" of her.
I think Kou just can't do proper gourd/worm shaping well like to properly represent what happened here...
Twinkle-Twinkle shining, Marisa's proudful...More beautiful than Mr.FlowerFaster than Mr.WindMarisa's... Mr.Footsie...Maricha's Mr.Footsiiiiiiiiie!!!