A relitively new anime, and as i write this, an ongoing series. The discription:
This story is centered around a girl named Kuronuma Sawako who is nicknamed Sadako (ghost girl from “The Ring”) by her classmates because of her scary face and demeanor. She greatly admires Kazehaya-kun from afar, he is “100% refreshing” and is able to draw in people with his personality. Unlike her facial expressions she yearns to make friends and live as a normal student. Gradually she starts affects those around her, including Kazehaya-kun…
Episode #1:
http://www.leetanime.com/kimi-ni-todoke/kimi-ni-todoke-episode-1/