Mai is the younger adopted sister of Seragaki Aoba, just your everyday, average boy next door. Or is he? Mai's been noticing that Aoba has been acting differently lately, like he's been keeping secrets from her, then again, who is she to talk about keeping secrets? After all she has been hiding her secret life in the world of Rhyme from her brother by hiding it behind a modelling job, but after his accident a few years ago, who could blame her? But little by little, Mai begins to find out what he's hiding from her, but she gets a bonus when she finds out what she's been hiding from herself for fourteen years...