Forced Into an Arranged Marriage and a Replacement Bride, I Had a Whirlwind Wedding with a Cold CEO

(Marriage first, love later; sweet, no angst or melodrama; five-year age gap.)

(A sweet, self-conscious girl VS a CEO who's cold on the outside but gentle only with his wife)

When her younger sister discovers that the man she's supposed to marry is gay, she demands to break off the engagement. For the sake of the family business, their parents force Shen You to take her sister's place in the marriage alliance.

Shen You, who has always been obedient, rebels for once and turns around to marry the man her parents set her up with.