Contracted for the Spaniard's Heir

I thought no one would ever love me.Ellie is rooting for her beautiful sister, who is the complete opposite of her, to succeed as an actress. She sold her house and lives in a share house with her father, and even carries debt... One day, she goes to the park because of her part-time job and sees a little boy all by himself. Is he lost? Ellie calls out to him and his guardian, Luca, appears. He is the CEO of a large corporation, and intimidatingly says, "Thanks for taking care of him. Here's a little something for you." He handed her a check for hush money. Ellie refuses the impossible amount and runs away, but the next day, Luca shows up and...?