Bara to Sumire toRose and Violet; Roses and Violets; Розы и Фиалки; الوردة و البنفسج; バラとスミレと; 玫瑰与紫罗兰; 玫瑰與紫羅蘭

From Chibi Manga: Izumozaki Sumire was accepted into Ojika High School. Her older brother Satoshi was strangely against her entering that school. But she wanted to experience high school life at the same school he attended no matter what. Subsequently the truth about her older brother’s real identity comes to light...!