Nanafa Kyan lives in Okinawa with her grandmother who runs the Kame Soba soba shop, her beautiful older sister Nao who is in high school, and her younger sister Kokona, who is in elementary school and has a strong ability to sense the supernatural. One day, Nanafa witnesses a seal fall off of a Chinese banyan tree, and three spirits who live in that tree are unleashed. These spirits include Niina and Raana, who are jimunaa spirits. The third spirit is Iina, who is an incarnation of an Okinawan lion statue. As spirits start appearing one after another, the peaceful life of Nanafa and her family begins to change. (Source: ANN)

Kitarou is a youkai boy born in a cemetery, and aside from his mostly-decayed father, the last living member of the Ghost tribe. He is missing his left eye, but his hair usually covers the empty socket. He fights for peace between humans and youkai, which generally involves protecting the former from the wiles of the latter. This version of the Kitarou story is based on the original Hakaba Kitarou manga, the manga which inspired the popular Gegege no Kitarou series in the late 60's. (Source: Wikipedia)

After the conclusion of Hakuouki, Chizuru Yukimura and the Shinsengumi are forced to flee Kyoto and set sail for Edo. In their commander Isami Kondou's absence, vice-commander Toshizou Hijikata steps in as acting commander. However, Hijikata is not only struggling with the extra leadership duties—which worries everyone around him—but also a newfound uncontrollable bloodlust. To make matters worse, the urge does not affect him alone, and it is even beginning to drive some of his subordinates mad. Finally, Kondou returns with orders from the emperor to defend the castle, and a new name for their squad: the Kouyou Chinbutai. But in war, the balance of power can shift suddenly and allegiances can waver. In Hakuouki Hekketsuroku, Chizuru follows the Shinsengumi into the heart of war and continues the search for her missing father, all while the bond between her and Hijikata grows ever stronger.

New Hakuoki OVA.