Trinity Seven Vol. 22 (manga)

Facing the overwhelming might of Dis Trinity, Arata joins with Abyss and Last in the hopes that an unprecedented trifecta of demon lords is enough to even the odds against the Great Demon Lord himself. But Dis has a trump card on his side: the weapon Dante Cross, capable of obliterating gods and demons alike! In the heat of battle, Arata remembers the bonds he's forged and discovers new abilities, but will they be enough to survive...?