Koi Hotaru (Kadokawa Bunko to 7-4 Ryu Omoe Ju Ro Kocho Ken)

[Machine Translation] A female swordsman challenges Soujuro to a stand-off due to mistaken identity. Soujuro's servant Tadashichi, who was trying to find out what happened, was caught in an attack by a group of samurai on the female swordsman and was wounded by a sword. Soujuro comes to the rescue and saves Fusa, a female swordsman, which leads him to become involved in an intra-fiefdom feud in the Kurata clan in Dewa. Furthermore, a servant of Kiyosuya, where Soujuro lives, is killed, and Soujuro, enraged, decides to confront the murderous sword "Sarujunryu"! And what will happen to the feelings of the female swordsman? This is the fourth installment of a newly written popular series.

女剣士が、人違いから想十郎に立ち合いを挑んだ。事情を聞こうとした想十郎の下男・忠七は、武士集団の女剣士への襲撃に巻き込まれ、刀傷を負う。助けに入った想十郎は、女剣士・ふさを救ったことで、出羽・倉田藩の藩内抗争に巻き込まれることに。さらに想十郎が身を寄せる清洲屋の奉公人が殺され、怒りに燃える想十郎は殺人剣「猿迅流」との対決を決意した!そして、女剣士の想いの行方は…。書き下ろし人気シリーズ第4弾。