Four years ago, the girl watched the boy die. The last words the boy covered in blood left for her were: "Sister, don't forget me."
She engraved the boy's appearance in her heart, and also kept the boy's words in her heart.
But when she saw the boy again, he had forgotten everything.
"Who are you?"
His voice was as cold as if he had never seen her before.
Childhood sweethearts
Senior sister×Junior brother
Mission: Work hard to create a better future.