Title: Black★Rock Shooter
Type: OVA
Genres: Action, Drama, School, Slice of Life
Summary: These young girls' hearts are pure, and then violent!
Mato Kuroi just got into junior high school, and on the first day, someone catches her eye; her classmate Yomi Takanashi. The two meet.
The innocent and naive Mato. The mature Yomi. Seemingly opposites, but the time they spend together only strengthens a growing friendship.
But as they go into their second year at the school, they get placed in separate classes, and they begin to grow apart.
But somewhere simultaneously...
In another world, a young girl, blue fire residing in her eyes, Black Rock Shooter faces another young girl; this one holding a jet-black scythe, Dead Master, and a battle to the death begins to unfold.

Source: link

Title: Bakemonogatari
Genres: action, comedy, mystery, psychological, romance, slice of life, supernatural
Plot Summary: Although there are still traces of the brief period he became a vampire, third year high school student Koyomi Araragi is human again. He happens upon others with their own supernatural problems and finds that he can empathize. Koyomi becomes involved in their lives, seeking to help them and occasionally asking for advice from Meme Oshino, the homeless man who helped him become human again.