short series

Sis, He's Really My Brother-in-Law

share time: 2026-05-25 06:01:26

Lin Xiao, the younger sister, lets her runaway elder sister Su Qing stay at her old house. She is shocked to find that Su Qing's boyfriend is Gu Mingyuan, the wealthy man she just started dating—who is also Su Qing's husband. Panicked, Lin Xiao confronts Su Qing, who hesitates to explain. Lin Xiao discovers Su Qing's divorce agreement and spots Gu Mingyuan interacting with a strange girl at a clinic, mistakenly thinking her brother-in-law is cheating. She cries to take Su Qing to seek justice. Only then does Gu Mingyuan show Su Qing's medical record: Su Qing has early Alzheimer's, forgetting her marriage and only wanting to hold onto the feeling of "being in love". Gu Mingyuan acts as her boyfriend to protect her secret. Lin Xiao clears up the misunderstanding, accompanies her sister to face the illness, and re-understands the meaning of marriage and protection.

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