Secret Marriage Swap, The War God’s Late Remorse

Titaness Cassandra accidentally discovers that Perseus, her fiancé of five years, has long been head over heels for her stepsister and would even sacrifice her life to keep the girl safe. She calmly agrees to swap marriages and takes Leah’s place to wed Abel, the cursed son of Hades. On their wedding day, Perseus finds his bride has been switched, yet he feels no joy. All his past fondness was merely gratitude for who he thought saved him as a child—only he got the wrong person. He has actually fallen for Cassandra over the years, but by the time he realizes it, she is already married to another. What fate awaits them both?