Ban and Elaine from the anime series "The Seven Deadly Sins" have a deep and complex relationship. They initially met when Ban infiltrated the Fairy King's Forest to steal water from the Fountain of Youth. Despite their rocky start, they eventually develop feelings for each other and become romantically involved. Their bond is tested multiple times throughout the series, but their love for each other remains strong. Ultimately, they are shown to be deeply connected and willing to go to great lengths to protect each other.