After Dad's Fake Marriage, My Sister Spoils Me Rotten

After Dad's Fake Marriage, My Sister Spoils Me Rotten Plot:

Xiao Tang, a sensitive 10-year-old who lost her mom, has a dad who enters a fake marriage with Aunt Lin (who has a daughter named Xing Ran) for a school district house. Xiao Tang always thinks Xing Ran is here to "steal her dad"—hiding her paintbrushes, pouring her hot cocoa into the flower pot. But Xing Ran never minds: she leaves a warm glass of milk when Xiao Tang stays up late doing homework, runs three blocks in the rain to pick her up (her own shoulder soaked), and even argues with a senior boy to get Xiao Tang's stolen comic book back (her wrist scratched but she never mentions it). When Xiao Tang finally lets her guard down and secretly puts a fruit candy in Xing Ran's schoolbag, she overhears Aunt Lin telling her dad: "The fake marriage period is over. Xing Ran said she doesn't want to make Xiao Tang sad, so she'll leave quietly..." Xiao Tang runs to find Xing Ran like crazy, only to see her standing at the door with a big box—inside are all Xiao Tang's favorite snacks and a new schoolbag: "Xiao Tang, I told Auntie, I'm staying. I'll be your sister forever."