Senpai! Ima kara Kokurimasu!

Koharu’s has lived her young life by her mother’s motto: a good woman never gets rejected. But when the most popular guy in school turns her down before she even gets the words out, her whole world comes crashing down … until she realizes, if she just keeps confessing, she’ll never get rejected! And as an unlikely friendship begins between the two, she’s given an ultimatum: he’ll say yes when his heart leans 100% towards her! A goofy, assertive romantic comedy!
(Source: Kodansha USA)