Protagonist of [i][[Idol Time Pripara]][/i]. [[Yumekawa Shogo]]'s sister.

Yui has [[purple eyes]] and [[short hair|short]] [[blonde hair]] with [[curly hair|curls]], [[sidelocks]] and [[two side up]] [[ringlets]]. She decorates her hair with a [[blue bow|blue]] [[hair bow|bow]] with a [[star hair ornament|star]] in the middle and usually wears [[Avocado Academy school uniform]].

While inside PriPara, Yui grows taller and her hair [[long hair|reaches down until her waist]]. Her usual outfit consists of a [[purple choker|purple]] [[star choker]], a [[star necklace]], a [[cropped jacket|cropped]] [[pink jacket]] with [[long sleeves]], a [[purple shirt]] with a [[heart print|heart]] [[print shirt|print]], a [[pleated skirt|pleated]] [[purple skirt|purple]] [[miniskirt]] with [[frilled skirt|frills]] on the bottom, [[white socks|white]] [[kneehighs]] and [[purple footwear|purple]] [[shoes]] decorated with a [[pink bow]].
夢川ゆい 梦川唯 マイ☆ドリーム 夢川兄妹