Kimi ni Todoke - From Me to You (manga)

Kimi ni Todoke is about a girl named Kuronuma Sawako. She is nicknamed Sadako (from "The Ring") because many people see her as strange and often mistake her for a ghost. A boy called Kazehaya-kun becomes her friend and, to her, is "100% refreshness."

While Sawako Kuronuma is probably the kindest person on the planet, her long straight black hair, creepy smile and equally creepy aura have earned her the nickname Sadako, like the girl from “The Ring”. Everybody at school is convinced she can see ghosts and do other occult things like give people curses for staring too long. Due to this, they are all afraid of her. Everyone except for the friendly and popular Shota Kazehaya-kun. Sawako’s whole world begins to open when Kazehaya starts speaking to her. With the help of Kazehaya, Sawako makes two best friends, Ayane Yano and Chizuru Yoshida, who help her with everything from dealing with bullies to figuring out Sawako’s feelings for Kazehaya.