Kadono village's shrine maiden has a guardian every generation. During Edo period, guardian Jinta confronts a demon foretelling a future Demon God's rise tied to their era. His quest to prevent this spans centuries.

An adventurer who served with the strongest fighters finally sets out on his own, in middle age.

When sinister forces threaten the peace of Britannia, a young prince embarks on a perilous journey to save his loved ones and discover his true powers.