How wonderful life is. The close brother-sister relationship between childhood sweethearts came to an abrupt end at the age of 6. They disappeared from each other's entire growth process. After passing through the ignorance of teenagers and reaching the throbbing of youth, their destinies are inextricably intertwined, and they are dependent on each other and have deep brotherhood.
So close in terms of status, so far in terms of blood. The bodies are so close, but the distance is still far away.
That person with whom he shared a childhood, the person who was absent from his entire boyhood, is he really his brother and sister?