Sakura, Saku

From Ikemen Manga:
Middle schooler Saku is a background character, an extra, always replaceable... or so she thinks? She was saved by a mysterious stranger, and has turned a whole new leaf?! Now in high school, she's found her role. And maybe something else...?
From BlueberryScans:
Saku is looking for a boy named "Sakura" who noticed and helped her when no one else would. Meeting a boy named "Haruki Sakura" during the high school entrance ceremony feels like fate...?!