Suki desu Senpai, Nyuubushimasu.

Synopsis

"'That face! He's exactly my type! I can't resist..." Hyori, a first-year high school girl, is feeling troubled. She wants a boyfriend, but she hasn't been able to find anyone she likes. Until she fell in love at first sight with that "beautiful" boy on the baseball team, Mifu-senpai! With those feelings in her heart, she decides to become a student-manager of the baseball team and take her shot with the senior...!? (Source: Kodansha, translated)