"The Sage of Wind, Ephtal is a reincarnated human, coming from modern Earth. Reincarnated in a new world where magic is real, he decides to devote the entirety of his life in the pursuit of magic. Despite his efforts, though, he discovers that he is absolutely talentless in magic, and breathed his last in anguish. ...But it isn’t the end for him just yet! He reincarnates once again bearing the same name, Ephtal, 400 years later. Having retained his knowledge and power, he steels his resolve and once again sets his sights for the peak of magic! However, in a surprising turn of events, he discovers that magic has terribly declined. In this era where powerful spells is a rarity, his talentless self is now completely unmatched! From the depths of powerlessness to the peak of power, the talentless but peerless mage's journey to the top starts now!"

Since the Edo periods of Japan, gladiator arenas exist in certain areas. In these arenas, wealthy business owners and merchants hire gladiators to fight in unarmed combat where winner takes all. Tokita Ohma, nicknamed "Ashura", joins these arenas and devastates his opponents. His spectacular ability to crush his enemies catches the attention of the big business owners, including the Nogi Group chairman, Nogi Hideki.

Two years after the events of Kengan Ashura, a young man named Narushima Koga aims to enter the Kengan matches, while also seeking out Tokita Ohma for a mysterious reason. He begins to work under Yamashita Kazuo when he meets Gaoh Ryuki, the spitting image of Ohma. Now with a massive showdown between the Kengan Association and Purgatory, another underground martial-arts fighting organization, looming in the background, how will Kouga become strong enough to take part in the legendary Kengan fights?

Since the eruption of Mount Fuji, the nights in Japan and this city have changed completely. Those covered in volcanic ash from Mount Fuji have become battle vampires, wielding tremendous power as they've started to kill each other and wash themselves in the blood of their fallen foes.

Catia has always hid her face under a mask during her days at the academy. Now, right in the middle of the graduation party, her fiancé the First Prince calls off their engagement, accusing her of being as mean-hearted as her ugly appearance. But he should've thought twice, because after all, who ever said beneath the mask was an ugly face?