Hiro is a skilled samurai fighter from the future, unexpectedly transported to Japan's Sengoku period. He arrives injured in Yasaka harbor, receiving medical aid from a local. His sudden appearance significantly disrupts the era.

A past defeat by the formidable Kagura drives Hiro. Kagura took something critically important from him during their encounter, fueling Hiro's quest to find allies capable of facing Kagura again.

In Yasaka, Hiro recruits six individuals for his team: Atsushi, leader of a local gang previously defeated by Kagura; Makidai, a ronin for hire who also lost to Kagura; Takahiro, a young but experienced archer; Matsu, a ninja from the Furen Valley; Usa, a ninja from the rival Suiryu Clan; and Akira, leader of a mountain bandit group. This diverse group unites under Hiro's leadership to build the strength and strategy needed to challenge Kagura.

Manga artist Hiroshi Takahashi, known for works like *Crows* and *WORST*, created Hiro's visual design. This results in a distinctive fusion of samurai and modern elements, reflecting Hiro's time-displaced origin.

Hiro reflects on the events of his journey through card and board games, introspecting about his mission and experiences in the Sengoku period.