After a Working Woman Transmigrates into a Book as the Mary Sue Heroine

After half a month of nonstop overtime, Su Chenye, who’s suffering from a nasty cold, finally gets a chance to rest. He takes his medicine and settles in for a good night’s sleep, only to wake up and discover he’s transmigrated! He’s ended up inside a Mary Sue novel he wrote out of boredom, and he’s become the heroine?! Come on, is this a joke? They even got the gender wrong when I transmigrated!