My Lucky Princess

Both are historical dramas in which the members of a family are all fated to die young and trying to avoid their fate.

Both are historical mini dramas in which the couple are strangers when they marry/are engaged toward the beginning of the drama, but they end up falling in love. Both the FLs and MLs have their own agendas/missions, and both MLs are princes with a brother who are supporting characters in the dramas. Both MLs are feigning weakness/changing their personalities for their own protection.