This story gives no explanation to anything.
-Mr.Pharmacist has a physical relationship whit the other guy, yet we are given no reason why, all we know is that they are friends, plus he is the bottom in said relationship.
-Mr.Pharmacist claims to like MC, despite being in a physical relationship whit someone else, but never explicitly shows that apart from supposedly teasing the MC by making him embarrassed and refusing to have sex in the pharmacy, the other guy also asks him if he will be okay since he think the MC hasn't left work, but I guess he seems more interested in taking it up his ass (and loving it, it seems) then caring about weather or not the guy he claims to like is still there, plus, it also seems that Mr.Pharmacist was the one that initiated the sex.
*side rant* I still hate how in the Yaoi genre, characters are head over heals whit someone but still cherish their sex drive more then their feelings. "Oh, I love [insert random character here] but let me have [insert random character here] that works whit both of us fuck me", like, I get it wen they give the excuse that they do it because the other guy looks like the one they like, and while I accept this excuse the fact that they would rather find a look alike instead of making an effort still pisses me off, but in this case, not only is the other guy nothing like the MC, the roles are even switched, so what excuse is there apart from Mr.Pharmacist just wanting to be fucked for the sake of liking to be fucked ?
-Mr.Pharmacist stops his commitment and decided to date MC, still gives no exposure as the nature of their commitment, and he is now a top.
-Mr.Pharmacist tells MC to not misunderstand again, yet he never explain the MC what he saw, or the nature of his relation whit the other guy, and basically leaves the MC to feel insecure all by himself. Telling someone "the only person I wanna be good to is you" isnt enough reason for the person to just pretend they didn't saw the person they like taking it up the ass by someone else , he is also unconsidered enough to call the MC to the place he just had sex on 2 days ago, and where the whole drama started, making it seem like he is compensating for it, which is disgusting.
*Personal Rant*
-This was just a train wreck, Mr.Pharmacist character is all over the place, he wants the MC to work keep working whit him because he supposedly likes him, yet all this time has been having sex whit his friend and even does so on the workplace, whit no regard to weather or not the MC is there, so much for liking the MC am I right ?
-Gets worried about the MC and panics wen the MC wants to quit, yet after they wake up he not only makes the MC feel sorry, he even asks the MC to not misunderstand his relationship whit the friend again, yet never explains what the nature of said relationship is so that the MC doesn't do that, totally not self-centered and ass-hole like.
-And now, the MC is dating him while working together whit him and the guy who he saw fuck him 2 days ago, this TOTALLY isnt a issue, I am sure MC wont feel like shit every time he goes to work knowing that his boyfriend has had a relationship whit this other guy, I am sure he wont worry about the fact that the Pharmacist might like being done more then being the one doing it, this totally isnt a toxic work environment.
My score of this is "train wreck/10"
On the other hand, huge thanks to the translation team for their work, cant think how you guys managed to translate this train wreck of a story.