How Not to Summon a Demon Lord

Synopsis

When it comes to the fantasy MMORPG Cross Reverie, none can match the power of the Demon King Diablo. Possessing the game’s rarest artifacts and an unrivaled player level, he overpowers all foolish enough to confront him. But despite his fearsome reputation, Diablo’s true identity is Takuma Sakamoto, a shut-in gamer devoid of any social skills. Defeating hopeless challengers day by day, Takuma cares about nothing else but his virtual life—that is, until a summoning spell suddenly transports him to another world where he has Diablo’s appearance! In this new world resembling his favorite game, Takuma is greeted by the two girls who summoned him. They perform an Enslavement Ritual in an attempt to subjugate him, but the spell backfires and causes them to become his slaves instead. With the situation now becoming more awkward than ever, Takuma decides to accompany the girls in finding a way to unbind their contract while learning to adapt to his new existence as the menacing Demon King.

First Air Date: 2018-07-05

Last Air Date: 2021-06-10

Number of Seasons: 2

Number of Episodes: 22

Networks: TBS, AT-X

View Technical Specifications on IMDb

Top Cast

Masaaki Mizunaka as Sakamoto Takuma (voice)
Yu Serizawa as Shera L. Greenwood (voice)
Azumi Waki as Rem Galeu (voice)
Yumi Hara as Alicia Crystella (voice)
Atsumi Tanezaki as Klem (voice)
Rumi Okubo as Sylvie (voice)
Emiri Kato as Edelgard (voice)
Sayaka Senbongi as Celestine Baudelaire (voice)
Ryotaro Okiayu as Emile Bichelberger (voice)
Akira Ishida as Keera L Greenwood (voice)

Seasons

Season 1 (2018)

In the MMORPG Cross Reverie, Takuma Sakamoto is so powerful that he is lauded as the “Demon Lord” by other players. One day, he is summoned to a world outside his own, but with the same appearance he had in the game. There, he meets two girls who both proclaim themselves to be his Summoner. They perform an Enslavement Ritual to turn him into their Summon, but that’s when Takuma’s passive ability Magic Reflection activates. Instead, it is the girls who become enslaved. Though Takuma may be the strongest Sorcerer there is, he has no idea how to talk with other people. It is here he makes his choice: to act based on his persona from the game.

Episodes:

Ep. 1: The Demon Lord Act (2018-07-05)

Takuma Sakamoto was a shut-in gamer who achieved renown as the Demon Lord in Cross Reverie, a MMORPG, for his overwhelming gear and skill.
Ep. 2: Strongest Newcomer (2018-07-12)

After awaking to hands filled with breasts, Diablo follows Shera and Rem to register as new members of the Adventurer’s Guild. While Shera is identified as a level 30 Summoner by the guild, Diablo’s level proves too high for them to measure.
Ep. 3: Fallen Assault (2018-07-19)

The Warrior Emile, defender and ally of all women, challenges Diablo to a fight.
Ep. 4: Point-Blank War Dance (2018-07-26)

Rem, Celestine, and even Emile struggle in their battle against Gregore’s sudden attack. Meanwhile, Diablo and Edelgard confront each other on the Bridge of Ulug.
Ep. 5: Imperial Knight (2018-08-02)

The Kingdom of Greenwood demands that Faltra City hand over Princess Shera. If they refuse, it will lead to war, so Diablo meets with Galford, the Lord of Faltra City, and accepts a quest to prevent war from breaking out.
Ep. 6: Slave Market (2018-08-09)

While Greenwood’s demands remain unmet, Diablo and the girls visit a slave market to see if they can learn the magical secret of the Enslavement Collars.
Ep. 7: Change of Heart (2018-08-16)

The following day after Prince Keera’s visit, Shera suddenly bids farewell to Diablo while they’re preparing potions. Unable to stop her from leaving, Diablo holes up in the inn, consumed with regret. Rem is unsettled to see him so negative, too.
Ep. 8: Hero’s Charge (2018-08-23)

Diablo squares off with Prince Keera’s Summon, the Force Hydra, a monster he has never faced before.
Ep. 9: Holy Knight Tale (2018-08-30)

Alicia returns to the Imperial Capital to give her report on the incident between Faltra and the Kingdom of Greenwood. There she encounters the Paladin, Saddler.
Ep. 10: The Demon Lord’s Resurrection (2018-09-06)

The night of the Demon Lord’s resurrection arrives at long last. Rem finally reveals to Shera and Alicia that the Demon Lord Krebskulm’s soul is sealed within her. Together, Diablo’s party heads for Starfall Tower, where Edelgard awaits.
Ep. 11: The Young Girl Awakens (2018-09-13)

Diablo’s party returns to Faltra with the newly resurrected Klem. On their way back from visiting Celestine, Rem and Klem suddenly get separated from Diablo and Shera, with Alicia having led them both astray.
Ep. 12: Battle for Legitimacy (2018-09-20)

The Demon Lord Krebskulm has awakened due to Alicia’s betrayal. Diablo stands alone against Klem, her mind consumed by hatred. Shera races to Rem’s side. An army of Fallen led by Edelgard marches on Faltra, and the curtain rises on their final battle.