Mezzo this one isn't premature, Premature Marisas have nearly microscopic hats, braids and hair, well maybe i'm exagerating, but basically they give them a more bald like appearance, this one is a normal komarisa.
mistag, i recall that this Komarisa wasn't koyukkuri, check the starting pics and you'll see she's a full ko, instead of a premature one. Remember that premature yukkuris aren't able to strech since they are weaker and have weaker dough.
1. This is not Sales Guy, this is salesnukiaki, a different artist who uses Sales Guy's style.
2. I'd call this a premature yukkuri, style wise, based on the overall lack of hair and tiny braid... Although with Sales Guy's works, premies and kos were distinct, this new guy might make all kos look like premies...