She lived with her grandma since she was a child. Later, her father married another man and took Song Nan away and lived a depressed life. Her grandma passed away suddenly, and she suffered from depression due to longing for her. When she entered high school, she met her childhood playmate Shen Yiyu. He told her: "I am an angel sent by grandma to protect you." Song Nan remembered this sentence for a long time, and Shen Yiyu was the only light in her dark world.
Intention: It's all regrets
