Responses
		 
																				
                                                In my opinion (and suspicion), I don't think the chef is the soulmate. I think it's the show's host who is the soulmate because the host's name is Go Han bin which matches with the initial soulmark. 
If it's the chef, the soulmark would the the chef's initials right? 
Then again, it's only my opinion.
 ヾ(❀╹◡╹)ノ~                                            

 
		

- SPOILER TERRITORY -
I have good cause to believe Calix Elle Ward and Yeon Sooha are soulmates, primarily because of what I saw in raws for chapter 14.
Okay, so we all know that one of the signs of a person being your soulmate is that their imprint will darken, right? Yet as many pointed out in chapter five, the imprint remained the same, as seen below:
http://www.mangago.zone/read-manga/pian_pian/uu/ibx_chapter-5/pg-64/
However, in chapter fourteen when we see another instance of Sooha's imprint exposed, it's taken on a darker color, or at least what I see as a darker color. You can debate that it's remained unchanged or that the lighting plays a role, and I will admit that even if it changed it's not highly noticeable (the watermark is also in the way as well).
https://toonkor.lat/피옌피옌_14화.html
I'm not sure why the two are different, but perhaps the latter is darker because Calix and Sooha had spent more time together as opposed to the once? It does say that the more exposure the imprint receives, the darker it gets. Or maybe the first time was too quick, lmao. I have no idea.
I welcome any input you follow readers would like to share. Do you think this may be substantial evidence that Calix and Sooha MIGHT be soulmates? Or am I overthinking this?