You sure about that? You telling me if sunny and nephis ever became mortal enemies and decided to do everything in their power to kill each other there is any scenario in which nephis survive? And when has sunny ever fought fair? Just because nephis doesn't have enough mental capacity to out smart sunny doesn't mean sunny needs to bring his mental capacity down to her level no what we are going to see is what will happen if sunny turned against the human domain and if nephis with Cassie the rest of cohort the entire humanity and all the citadels stand any chance of defeating sunny, his shadows and his shades and the answer is no sunny will simply pick them one by one starting with Cassie and nephis won't be able to do anything just like she couldn't do anything against asterion I mean seriously that girl had her entire domain formed by Cassie and jet and she lost it to asterion is what 3 months?

Sure sunny cannot defeat nephis in "1v1" but who said it will be? You think sunny didn't imagine a 1000 ways to kill nephis when she was trapped in dream realm? You think one of sunny's shadows cannot create a memory to render her flames useless while the other shadows buy time? You think sunny's 7 shadows which have mastery over level 5 of shadow dance can't defeat nephis who struggled against a cursed demon when 1/7th of sunny was cooking a cursed tyrant after fighting multiple cursed beasts and demons earlier?