After We Broke Off the Engagement, I Married My Sister-In-Law, and My Aloof Fiancée Cried.

The elf and lively sister, the cold and oppressive sister. They clearly have exactly the same face, but have a completely different temperament. As a result, Li Mubai, who accidentally met his sister on the first day down the mountain, mistook his sister for his elder sister. Facing the cold sister's breakup of the engagement, Li Mubai married his sister-in-law backhand in order to fool his master. Seeing her sister prospering with the help of Li Mubai, she regretted it. So, that day, she put on the same clothes and outfit as her sister...