On Valentine's Day, My Girlfriend's Sister Got the Certificate from Me.

On Valentine's Day, Lin Fan planned to register for marriage with his girlfriend. But my girlfriend was delayed by something, and her twin sister showed up! The younger sister originally wanted to replace her older sister, but ended up getting the wrong ID card, causing her to register her marriage with Lin Fan. This is where the amazing things begin. Faced with such a thing, Lin Fan said, "Sisters and sisters, they are all mine anyway!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.