Jigoku Shoujo EP12 - Overflowing Fragments

Akane Sawai stopped going to school due to emotional problems. Now, she locks herself up to her room and only opens up to her textmate, Yoshiki Fukasawa, who constantly visits her to check on her and convinces her to go to school. Sawai gets irritated by this, and is convinced by her textmate to send Fukasawa to hell. She finds out that her textmate is really Fukusawa and after coming to an understanding, Fukusawa convinces Sawai to send him to hell.