Hotaru Hinase

Hotaru Hinase is the main female protagonist of A Condition Called Love. She is a fairly average girl who has never been in love and doesn't even think she can fall in love. But after being moved somewhat by Hananoi's persistence in asking her out, she decides to give dating him a shot to hopefully become someone who can experience this thing you call love.

(Source: Hananoi-kun to Koi no Yamai Wiki!)