Wow.. To many!
But really... TRY THESE...

ORANGE and YUMEMIRU TAIYOU- by the well known author Takano Ichigo

LAST GAME - The cute shoujo manga out there.

tonari-no-kaibutsu-kun - It is so awesome and funny! Got adopted to an anime in fall. (>w<)

Arisa, Futari no himitsu, Ouji to hero