I am pretty sure he is in her body rn and she is his body. I don’t know why but i remember this chapter and it’s basically him realizing certain things while seeing her in his body.
I also feel like what helps a lot is that serin is super confident when she is in his body and well he gets really shy and self conscious when he is in her body.
Yeaaah that's what i remembered as well, i just got super extra confused when Serin called Gitae "Serin" and Gitae started using he/him towards Serin, it did make sense to me that Gitae was still in Serin's body especially when he says that he will have to exorcise her, but they insisted so much on switching pronouns and names that i started questioning my own understanding of what's happening

Are the translators confusing pronouns ever since the characters last switched bodies, or am I the one who is confused