Other names:
Ochitekita Naga to Horobiyuku Majo no Kuni; Ochitekita Ryuuou (Naga) to Horobiyuku Majo no Kuni; Ochitekita Ryuuou to Horobiyuku Majo no Kuchi; 穿越时空的龙王与迈向灭亡的魔女之国; 穿越龙王与步向灭亡的魔女之国; 落ちてきた龍王と滅びゆく魔女の国
In a world where witches are shunned and have been forced onto the brink of annihilation, a samurai with no memories is transported to the hideout of some of these witches. Having the name: "Dragon King" and a keen strategic mind, its up to him to help defend the witches from those that would seek them harm.