A young shut-in who dominates as a demon lord in an online video game finds himself transported into the game's world and must find a way back to Earth while helping out the two girls who summoned him.
EPISODE 1
The Demon Lord Act
A shy gamer unwittingly assumes the role of his high-level demon lord character, Diablo, when two of the game's characters summon him into their world; when the summoning spell backfires on the two girls, the trio head to the nearest city for help.
EPISODE 2
The Strongest Newcomer
Diablo, Shera and Rem register with the Adventurer's Guild and embark on their first quest into a dangerous forest, where Shera senses an ambush lying in wait for them.
EPISODE 3
Fallen Assault
Diablo finds himself in a challenge against Emile, a chivalrous but ignorant warrior; Diablo reluctantly decides to defend a fortress from a horde of beastly Fallen after realising the low-skilled soldiers don't stand a chance.
EPISODE 4
Point-Blank War Dance
Emile defends Rem and Celestine from a Fallen infiltrator immune to their attacks; Diablo looks for a way to repel Edelgard, the Fallen horde's leader, as their stalemate drags on.
EPISODE 5
Imperial Knight
The Greenwood kingdom threatens war if Faltra City does not return its princess, Shera, and even puts a bounty out on her, but Shera wants to stay with Diablo; the city lord assigns an overly obedient imperial knight to aid the group.
EPISODE 6
Slave Market
Diablo, Shera and Rem visit a slave market to find a way to remove the girls' slave collars as the Kingdom of Greenwood's threat looms over them.
Masaaki Mizunaka
Yu Serizawa
Azumi Waki
Yūta Murano
