Manga by author Sakai Mayu - Status ongoing

From Chibi Manga:Since she was a child, Makoto was always compared to her beautiful sister. But she decided to become as awesome as she is for her entrance in High school. but it didn't really work...And then, she met a guy who's popular and older than her?! Makoto can't stop her heart to beat so fast. And then, she can't stop thinking about her school life!

From cotton candy scans:Yukito is a handsome scholarship student who also excels at sports. Just starting high school, he has never had the time to think about things like love.One day, he was saved by a girl he didn't know. Turns out, she's actually Yukito's classmate who's been absent since the school's opening ceremony...