戦国時代に現代の物が！？ 突如現れた与助が夏に桜、時代に無いガードレール、軽トラックなどを出現させて日本を狂わせる！ プレイヤーは異常を元の状態に戻しながら、最後に待ち受ける与助を討ち取り、日本を救え！ Modern things in the Sengoku period!? Yosuke has suddenly appeared and disrupted Japan by introducing things that don't belong in that era, such as cherry blossoms in summer, a guardrail, and a mini truck! As the player, restore these anomalies to their original state, defeat Yosuke in the final showdown and save Japan!