Hiro Shizuki student of Union Academy who lost his family in accident monsters attacked his home village killing everyone even his parents and sister he went to Union to become stronger to prevent what happened to him to happen to others being rejected by his crush and tired of being looked down on he sat in a spot in the forest to train by countless monsters appeared he managed to defeat them but was gravely wounded on the verge of death wishing to live a strang butterfly flutter to him he heard a woman's voice "Do you wish to live I shall give strength in exchange you become my host." seeing his life fading he a the butterfly landed on his hand in a blinding light reveal Hiro now reborn as a Butterfly with power beyond comprehending.

Yoo Jonghyuk finds himself in endless darkness after getting grabbed from behind in the mist. With the help of Secretive plotter he makes it to the start of the scenarios again without the help of his stigma. A time-jump to allow him to travel along Kim Dokja once more. What changes does he make? Can he save the Kim Dokja from dying again and again? Can he finally realize his relationship with Kim Dokja and what they mean to each other? (Crossposted on Ao3, under the name LifeAndDeathCompanion.)