Dear Diary

Misao Makimachi is a young 16 year old Kunoichi (a female ninja) who battles with all sorts of unimaginably dangerous enemies. Although she seems like no ordinary teenager, she does share some frustrations and confusions within her heart just as a normal teen.
She is uncontrollably and unconditionally in love with a man who has cared for her ever since she was young, Aoshi Shinomori, the former leader of the Oniwabanshu.

Although Misao is much younger and innocent than Aoshi, she can't relinquish her feelings and must decide whether to let them overtake her or go insane trying to overcome them, leaving Aoshi searching for a way to save her.