He Ran's childhood sweetheart, a warm and healing sunshine boy.Han Yu has been firmly guarding He Ran since she was a child. When He Ran's condition worsened, he stayed with her like a little sun.Although Han Yu likes He Ran, He Ran feels that Han Yu's feelings for her are not love, but they are just used to each other's company, and Xiao Han is his own life.Han Yu finally felt relieved and told He Ran to live well.