The art is really good, not like those typical shoujo mangas where the girls' eyes are super huge... Here it is:
Summary (from Baka-Updates):
Mizutani Shizuku is the type of person who only cares for her own grades. But when she accidentally delivers the lesson notes to Yoshida Haru, Haru becomes convinced that they are friends.
Haru turns out to have a very innocent personality, but who would've thought that Haru would actually confess to Shizuku?
A cold-hearted girl x super troublemaker romance with a fresh new perspective.
HIGHLY RECOMMENDED! :D:D