Secret Marriage Swap, The War God’s Late Remorse

Cassandra discovers her fiancé Perseus loves her stepsister, so she swaps marriages and marries Abel. Perseus realizes he actually loved Cassandra all along, but he confused gratitude with love. By the time he knows, she is already married to another.

Reelife released it as 38 bite-size episodes mixing marriage drama, secret identity and romance, made to watch on a phone in one sitting or a few.

Watch it for a marriage that starts on the wrong foot and has to be earned. On top of that: waiting for the truth about who the lead really is to come out.

At about 46–84 minutes in total, it's quicker to finish than most full-length series.

Start from episode 1 below; autoplay takes you to the next episode when one ends, and nothing needs a sign-up.