Prologue

The Dixon siblings who have rare diseases.

Behind Yui Dixon's smiles was a mixture of pain and sadness. She was not as brave as her brother Jax. She is not as smart as Yca. She is not as strong as Nathan and she is not as positive as her older brother Luka. For her, she was the most worthless of their siblings. She is a wild butterfly trying to find value.

She kept a deep secret from her family. No one knew what she was planning. And in unexpected turn of events, the person with the need for her blood helped Yui to fix problems, even though he will risk his life for helping her.

The boy accompanied Yui until the fifth downpour while there were stars.