The second season of Kakkou no Iinazuke.

Umino Nagi and Amano Erika were born on the same day and swapped at birth. Nagi was raised as the son of a diner owner, and Erika the daughter of a hotel tycoon. Their parents encourage them to become engaged, and they begin life together. Soon though, infatuations arise as Nagi becomes stuck in a love quadrangle. Life and love are embroiled in epic turmoil as fate is set in motion once again!

(Source: Crunchyroll)