I do not recommend. I'll summarize the plot, the story is basically the ROMANTIC and UNNECESSARY DRAMA of a guy, who was treated like shit by everyone until he goes back in time and decides to be treated like shit by a specific( useless tsundere ) woman, whose portrait he jacked off to once.
After reading the novel/manhwa, it is clear that she did not "tamed her ex-husband's mad dog", he already came to her tamed, trained and yandere~
💢