Is love always so sad? When will sadness stop? She fell in love with her brother who she grew up with. When she learned that they were half-brothers and sisters, the tragedy happened! Escape! Heartbreak! Sadness! It was all happening. The butterfly could not fly across the sea because fate destined it to be sad, so it could not escape the pain brought by fate. She met the right person at the right time, but the time was wrong...