Yumi and nightmer painter

Today at 4 AM ... I ended the first book by Brandon Sanderson on my list! And to be honest, I enjoyed reading this book from the first page. Nikaru is the best character in the book, in my opinion, but is he really an INTP? Maybe at first, but when he fell in love with Yimi, he changed! he was an INFP more than INTP, but I LOVE HIM. I like Yumi also, she's really ESTJ, and I don't know how they are so perfect together! 

You should try to read it! it's a fun book, has no obvious romance until the last chapter - my type -