[Cold and domineering Lin Wanzhou VS sunny and cute Su Yu (Lin Yu), slightly sickly girl + childhood sweetheart + genius]
After the disappearance of the Lin family's youngest son, her mother Shen Manzhi collapsed. During a break, Su Yu, a boy in the orphanage who had a look like her youngest son and comforted her by handing him candy, became a new member of the Lin family and changed his name to Lin Yu. From then on, 6-year-old Lin Qingwan had a clingy and obedient "younger brother" around her. She took care of him silently and protected her in a hidden way, and her possessiveness quietly grew in her day and night with him.
Su Yu (Lin Yu): "Sister Wanwan, don't do this! I'm afraid..."
Lin Qingwan: "Yuyu, don't call me sister, call me Wanwan. Don't be afraid. As long as you are obedient..."
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Lin Qingwan: "I like you so much, Yu Yu, you can never leave me in this life!"
Su Yu: "I like you too! Wanwan"
