- Heroine: Song Xingran (a handsome and flamboyant person with a hard-spoken and soft-hearted heart, who is good at fighting and guitar. Her broken family leads to a rebellious appearance, but she longs for warmth in her heart and uses "tease" to cover up her vulnerability)
- Male protagonist: Shen Nianbai (cold academic master, sensitive and lacking in love, talented in painting, as timid as a puppy, neglected by the foster family, gradually opened up his heart due to the appearance of Song Xingran, and transformed into a loyal dog guardian)
Under the midsummer wall, the handsome and flamboyant Song Xingran was blocked after climbing over the wall to skip class. He dragged the cool and cool academic Shen Nianbai who was passing by, hooked his chin with his fingertips and smiled: "Classmate, please cooperate and say you are my boyfriend." His ears were red, but he nodded silently, helping her deceive the dean.
Song Xingran was burdened with the trauma of a broken family and armed himself with rebellion and the guitar; Shen Nianbai grew up in the neglect of a foster family, and the paintbrush was the only solace. The last page of the painting book hides her blurred profile when she climbed over the wall. She forcibly brought him into her protective circle, taking him to the night market and watching the stars, laughing at him as a "frightened little milk dog"; he secretly prepared warm milk for her, and when she was beaten and scolded by her father, he tremblingly protected her behind him: "Xingran, I will take you away."
