The Black Prince and I :Chiyo no Kikyo HanaYome

Chiyo Sakuraba isn't living a lucky life. Having to leave her adopted parents house after being adopted not for long and instead live in an old shrine isn't really pleasant ,especially when it smells of rotten wood and has mice and cockroaches lingering everywhere.But lucky for her, when a lady who just happened to be her late Mother's long lost friend came to her rescue and invited her to live with her and her family at their mansion, Chiyo just couldn't say "No" . What's more ? It turns out that her mother's long lost friend's son is the most popular boy in school a.k.a the school's "Prince" and also Chiyo's classmate ,Yuu Sawano .Although he could be described as cold as ice , and sadistic ,he has a secret,that is whenever his body turns weak or is hugged by a member of the opposite sex,he'll turn into a boy not more then ten years old! Having to learn of his supernatural secret and live under the same roof together with this Black "Prince",
what will be the become of Chiyo?