Kunoichi Sakuya Vol. 1くのいち・咲夜

Sakuya adored her beloved nii-san (brother), one day she asks him if he has ever thouhg abiout a wife, he tell her her that he would only take the best female ninja as a wife and thus Sakuya promises to become number one and marry him! However all that changes when her nii-san is labeled a traitor and she is the one that has to capture him, however the one that ends up captured is Sakuya....