Y
You fight trolls, leather face, posessed villagers infected with an ancient "parasite", a religious cult bent on world domination, what appears to be an immortal castillean prince who owns a giant mechanical steampunk version of himself that chases you, Ada Wong is suddenly a super spy ninja and Leon Kennedy is a federal agent sent to rescue the presidents daughter from a Spanish village that looks like it's from some 1920s universal horror movie where the population doesn't even speak the native Spanish language.
What the fuck does any of that have to do with Resident Evil? Why couldn't shinji have just made a new character and called it the evil within or something. RE4 is closer related to something like splatter house than it is the series that shares its name.