Sengoku Bocchi

A high school student with a strong interest in the Warring States period is known among classmates for his enthusiasm for history. While visiting a castle ruin in Gunma, he is enveloped by an unusual light and awakens in the past, specifically at Kuoyama Castle. The castle is under attack by the Houjou forces, forcing him to take part in the conflict. He must help defend the fortress while uncovering various mysteries and interacting with several female characters. The question remains whether he can return to his original time.