Miyuki your older sister...the story start when this world has get created this world was an failure to the god they want to detroys this world but not that easy two clan in this world has aweken the strength to stop thier Ragnarok they marry ech other clan member to have a successor but since thier kid only have one inborn ability...only you..has awaken 5 skill when you a kid...Immortal,Adaption,Mimic ((only mimic skill has adaption)),no limit ((no limit of strength)),Absolutely 100% ((probably cant miss)) you a hope for this world...also your body is really talent since copy or mimic version of skill is just a failure of thier skill since you have no experience of using these skill but not for you your body was really special,special enought to scare yourself you using a ability get mimic like you was using these for all of your life even use it better than the owner..however you just get see as a hope a savior...you just want to live normaly...only your big sister has treat you normaly...your comfort place...after the ragnarok started...you found out...your belong sister....is also a god...want to detroys this world..all her emotion is just fake to controlling you -"Long time no see...My young Brother" smirk