Bloom into You Vol. 4 by Nakatani Nio
Yuu has always loved shoujo manga and fantasizes about the day that, she, too, will get a love confession that will send her heart a flutter. Yet when a male classmate confesses his feelings to her ... she feels nothing. Disappointed and confused, Yuu returns to school unsure how to respond. That's when Yuu sees the beautiful student council president Nanami turn down a suitor with such maturity and finesse that Yuu is inspired to ask her for advice. But when the next person to confess to Yuu is the alluring Nanami herself, has Yuu's shouj romance finally begun?