A mother-in-law and a daughter-in-law who are happy enemies, a conspiracy that is difficult to detect
We used to not deal with each other, but now we hold hands and share weal and woe.
Can the strongest mother-in-law team up with her unruly daughter-in-law to escape the trap set by others?
Why did her husband's temperament change drastically overnight?
"The Sword Master of Time Travel"
Concept: Mother-in-law and daughter-in-law relationship