Kai is the only daughter of the castle's owner, but she is a strong and masculine warrior, and Narita Nagachika is the next retainer of the castle. Kai can't hide her frustration at Nagachika, who has been nicknamed "Nobo" because of his gruff appearance. However, as Kai witnesses the many faces of Nagachika, she becomes more and more attracted to him. Meanwhile, the forces of Hideyoshi are closing in on their castle...? A spin-off manga of the hit historical novel "Nobo no Shiro"! Fans have been eagerly awaiting the comics!