It's difficult to find a manhwa/manhua/mangá that works with the theme "limited capacities", and "Sign" gave me great times while I as reading it. The fact that one of the protagonist is deaf makes it different from other manhwas, but at the same time this manhwa is also a little cliche. Otherwise, "Sign" is a quick read story perfect when you're bored, because it's easy to understand and the interactions between Yohan and Soohwa are cute and funny.
[HAS SPOILERS]
The story behind Yohan's deafness is quite shooking, but also is kinda predictable. The author wanted this part to be really serious and actually, it's not something to just ignore. But, this thing about "having someone who likes the protagonist and wants to ruin the relationship" is something very very cliche, it can be seen in a lot of manhwas/manhuas/mangás, so this specific fact doesn't' make "Sign" one of the bests.
Another thing is the fact that Yohan and Soohwa have sex in every single chapter, sometimes more then two times in the same chapter. "Sign" it is a yaoi manhwa, so obviously will have a lot of sex scenes, but the way it is in this story kinda implies that the author put the scenes to fill some space along the manhwa, like if the author didn't' have any ideas to write about and went to put sex and more sex because it's the last exit and there's readers that likes a lot that kind of content. The more some content has visibility, the more people are going to write about it. That's marketing.
Although, as said before, "Sign" is a quick read manhwa, so it has a funny story and funny characters. The lineart is pretty, not to much, not to less. Also, Soohwa starting to learn sign language because of Yohan is a very beautiful thing to do.
In general, "Sign" is on median. Not a masterpiece, but not close to be one of the worses. It's not a manhwa that can catch all hearts, but it can heat some hearts. You won't regret.
Sign