Sengoku Bo Chi 3 (Sakura No Mori Bunko) [Light Novel]

[Machine Translation] After traveling back in time to the Warring States Period and winning the "Battle of Kubozan Castle," Takasugi and his beautiful women were very active in the "Operation to Retrieve the Super Gigantic War Journal. On their way to Buenos Aires in pursuit of a "mysterious priestess" who is believed to be the key to Ichirota's return to the present, the group encounters a mysterious girl in Kyushu who looks exactly like Rei in the back. She claims to be a wild samurai of the Otomo family, and she is on an undercover mission to investigate a rumored plot against the Shimazu family, which is targeting the Otomo family. Ichirota and his men accompany her and see an impregnable castle being built on a land-locked island in Shimazu territory and an army of "artillery-equipped vehicles"-turtle shell vehicles. Ichirota sets out on a five-man mission to destroy these "turtle shell vehicles," which can be called "war chariots," but then the Shimazu forces, said to be the strongest in the western part of Japan, attack!

戦国時代にタイムトリップし、“九尾山城篭城戦”を勝利に導いた後、“超巨大戦鑑の奪回作戦”に大活躍した高杉一郎太と美女たち。一行は一郎太が現代に戻る鍵とおぼしき“謎の巫女”を追って豊後に向かう途中、九州の地で麗の後ろ姿にそっくりな謎の少女と出会う。火縄銃を持つこの少女は大友家の野武士だと言い、大友家を狙う島津家の良からぬ噂を聞きつけ、潜入調査をしているところだった。彼女に同行することとなった一郎太たちは、島津領内で陸繋島に築かれつつある難攻不落の城と“砲門を備えた車両”―亀甲車の軍団を目にする。戦国戦車とも言える“亀甲車”を破壊するため、たった5人で作戦を決行する一郎太だが、そこに西国最強と言われる島津軍が襲い掛かる!