[Male leads are virgins + romantic rivals competing for her + face-slapping with a satisfying turnaround + staying under the same roof + faux everyone-loves-her]
The heroine is clear-headed, rational, and a master at training dogs.
The hero is an immature little brat. Once he falls in love, his pure-hearted, whimpering-puppy nature comes out.
When Xie Yi learned that some distant relative he barely knew would be staying at his home, he was thoroughly annoyed. He felt his territory was being invaded and regarded the girl he had never met as a nuisance, hoping they could simply keep out of each other's way.
Song Hao did exactly as he had expected and paid him no attention.
But he couldn't stand it. He kept eagerly seeking her out, wanting to spend more time with her and see more lively expressions on her face.
The first day he met Song Hao: "Once your foot gets better, don't go clinging to me."
The nth day he met Song Hao: "You don't care about me at all!"
A male supporting character may appear later to move the leads' relationship forward. The heroine is the type to waver over romance, thinking that if she acts too loving and attentive, she'll lose, so she may not seem very committed. But she's firm about her plans for her own life.