I haven't read the novel for Grayson's story but I have heard it's good. I'm currently reading the manhwa version of it and I love it. It really delves into Grayson's character a lot. Grayson is a morally gray character due to him not being able to understand human feelings but that changes. I do recommend you try reading it.
I can't stand Grayson in Kiss me if you can, he would die I wouldn't mind. But in Desire me if you can they succeded un making him loveable first because the story help us understand why he is like that and in the end he's a big dreamer wich is kindda cute, he just doesn't understand others.
And 2nd the art, I think the art of desire me if you can is better for Dane & Grayson, they're ... HOT and cute at the same time . And the art for kiss me if can is perfect fort Chase & Josh. The other way wouldn't have worked

This is the only "Kiss me" series that I like. And I kinda don't wanna read Greyson's story, so can someone tell me if its worth reading or not?