Some lesser known but interesting series that made an impression on me :
さよならピアノソナタ - "The Farewell Piano Sonata"(??): 'Boy meets girl, Classical music meets Rock and Roll'
文学少女 - "Literature Girl"
黄昏色の詠使い - "The Song Caster of the Color of Sunset"(??)
扉の外 - "The Outside of Door"L'Lord of the Flies, Japanese style'
I will add more later.