The Devil Is a Part-timer! Vol. 22 (manga)

As the Devil Kings Army fights the Iron Scorpions, Satan challenges Alciel to a one-on one duel! Maous made it this far relying on trickery and clever schemes, but can he demonstrate the personal strength needed to force the enemy leader to bend the knee? And thats not the only headache he has managing this team of demons, as Lucifer stages a rebellion that puts the Maous forces in imminent danger of collapse!