In any given fandom, if there is any Shipping going on at all, there will usually be a particular couple substantially supported by both the Canon events of the series or story, and the general consensus of the fandom regarding Fanon; even if some parts of the fandom isn't thrilled about the nature of the relationship, it's generally agreed upon that the relationship does exist and cannot be easily ignored. These unbreakable couples are usually (but not always) comprised of the main protagonist and their Love Interest, though they're often seen among villain groups as well, and what makes this unique relationship can really only be decided by the individual viewer: they are called OTP: One True Pairing.