I found a potential grammar error: "in on the" - "in the"

Aww so sweet!

I have seen this scenario of "Yoriko Touka 'Touka is a ghoul' lesbian romance" before, three times before, in fact. This is an unimaginative, unoriginal, dime-a-dozen Slash fic. Is there seriously ANYONE who can put the two together in a "Yoriko finds out Touka is a ghoul" situation WITHOUT resorting to homosexuality?!