Tang San picked up a little slave and named him Tang Xu. The little slave was very happy to have a name. He was loyal and took care of Tang San day and night, but he developed feelings that he shouldn't have. The little slave was afraid that Tang San would abandon him if he found out, so even if he reunited with Tang San in his second life, he hid it very well. Later:
Tang San: "Do you love me?"
Tang Xu: "Go back to the master, I don't dare."
Tang San was furious: "No, you must dare!"
Purpose: Love that transcends master and servant