You get transmigrated into a thriller slash dark romance BL novel as an unknown side character. Now, why's that a problem, you might ask?

Because you've caught the eye of the main character. Oh, and it gets worse, because you've inadvertently attracted the psychopathic love interest, too. The only mildly amusing thing about your whole predicament is watching them both try to tear each other apart rather than obsess over each other. (Well, Yvon obsessing over Ellis, anyways.)