The young Bird Andy and Raphael were lovers in his previous life, but because Raphael was controlled by the evil spirit that resided in him, Bird Andy died in the fire.
Eight years later, a baby boy with black hair and blue eyes, Yue Jin, was born in the Edwardian family in England. Because Yue Jin was an illegitimate child, he was thrown into the furnace and almost burned to death. Fortunately, he inherited the planarian gene system.
(The regeneration gene secretly developed by scientists at the end of World War II can not only become immortal, but also has the property of splitting living bodies and is easily hosted by souls. If injected into the deceased, it will turn the deceased into a zombie).
Therefore, the souls of Bird Andy, Isabella, Aldrich and others who all died in the fire in their previous lives are lodged in the body of the baby Xiao Yuejin.
Because Xiao Yuejin was taken away by a mysterious scientific research organization, the characteristics of living body splitting caused Xiao Yuejin to be split into septuplets, and the different souls in the body also went to different bodies.
After experiencing some events, Bird Andy recovered his memory and became the young master of the Edward family as Xiao Yuejin, but he deliberately pretended to have amnesia. Due to the age gap after reincarnation, he could not become a lover with Raphael.
Later, because the evil spirit inhabiting Raphael's body killed another person, in order to free Raphael from pain, Xiao Yuejin and Raphael died in love together. Their souls resided in the new Xiao Yuejin's body, but they both lost their memories.
Afterwards, Kogoshin reunited with his former best friend Inukai Yoshitaro. After fighting against some evil forces together, they began a life of reasoning and solving crimes.