A black figure always walks alone in the dark night,
It was as if the cold was gathered by him.
Nineteen-year-old Wannian Bingshan has a six-year-old sister to take care of.
Will the cold-faced iceberg who has never taken care of anyone be melted by the innocence of a child?
However, are there any entanglements on the road to growth?
Facing his sister who had the same pure black eyes as him, Bingshan's heart was moved.
Is there any unknown secret hidden behind the not-so-simple sister?
An inevitable misunderstanding, even if my sister leaves...
When he met her again a few years later, she was no longer the child nestled in his arms. She was...