I want to say she’s Yuzuhara Konomi, but that character has twintails and this cosplayer looks like she only has a side ponytail. Komaki Manaka has a hairclip on that side, but her hair color is light brown. And then there’s Hanesaki Mio who is a new heroine only available in the Playstation 3 version who does but her hair up, but not when she’s no longer wearing her glasses.
Maybe I should open a poll for this instead. Thanks again to Michael for sending this in!
EDIT: Thanks to anon for confirming she is Komaki Manaka from To Heart 2!