Isekai Maou to Shoukan Shoujo no Dorei Majutsu


How Not to Summon a Demon Lord

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Alternative Titles

Synonyms: The Otherworldly Demon King and the Summoner Girls' Slave Magic
Japanese: 異世界魔王と召喚少女の奴隷魔術
English: How Not to Summon a Demon Lord
German: How Not To Summon A Demon Lord
Spanish: How not to Summon a Demon Lord
French: How Not to Summon a Demon Lord
More titles

Information

Type: TV
Episodes: 12
Status: Finished Airing
Aired: Jul 5, 2018 to Sep 20, 2018
Premiered: Summer 2018
Broadcast: Thursdays at 21:30 (JST)
Licensors: Funimation
Studios: Ajia-do
Genres: ActionAction, ComedyComedy, FantasyFantasy, RomanceRomance, EcchiEcchi
Themes: HaremHarem, IsekaiIsekai
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older

Statistics

Score: 6.831 (scored by 442353442,353 users)
1 indicates a weighted score.
Ranked: #52012
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #277
Members: 763,599
Favorites: 2,536

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6.83
Ranked #5201Popularity #277Members 763,599
Add to My List
Episodes: /12

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: Rem Galeu, a petite Pantherian adventurer, and Shera L. Greenwood, a busty Elf summoner. 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.

[Written by MAL Rewrite]

Characters & Voice Actors


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Opening Theme

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"DeCIDE" by SUMMONERS 2+ (Yuu Serizawa, Azumi Waki, Yumi Hara, Rumi Ookubo, Emiri Katou)
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Ending Theme

1: "Saiaku na hi demo Anata ga Suki" by Yuu Serizawa (eps 1-11)
2: "DeCIDE" by SUMMONERS 2+ (Yuu Serizawa, Azumi Waki, Yumi Hara, Rumi Ookubo, Emiri Katou) (eps 12)

Episode Videos




Reviews

Oct 1, 2024
Another lovely isekai-ecchi-harem anime. Overpowered main char with a big heart and love for the boobs. Exxxtra ecchi, funny and a wonderful adventure anime of a game designer thrown into an magical world and becoming a maxed out demon lord magician. Very enjoyable. For all isekai - ecchi - harem - adventure anime lovers. Full of magic, demons, power and love. A lovely mix of highschool dxd and demon king daimao. If you hate Ecchi anime, please do not watch this one. A very uplifting anime. 10 / 10 for me. Another overpowered main character to save the magic world by love for curves.
Mar 20, 2025
Mixed Feelings
Random hikikomori gets isekai'd as his overpowered game character etc etc etc. We all know the idea and honestly, this show wasn't terrible at it (if you like trash isekais as a pastime thing, of course).

Other than being silly and predictable with an OP MC, which is something I can get around, there is only one but MAJOR downside to this anime: even for japanese standards, the ped0ph1lia in this one is freakish. All these common themes (ecchi, harem, "lolis") are creepy and at some point straight up boring/annoying, and showing up in media targeting not only but mainly children and teens is super problematic.

Overall, ...
Dec 23, 2024
Another nothing burger. Sort of almost plot, however again nothing really happens. The world-building is at least almost passable. The characters are bland, the story is bland, and the romance feels creepy and weird, which Ill get to. The magic system is bland and basic. The animation isn't bad, but it also isn't good. Nothing about this show stand out in any way.

The stakes are never high and nothing ever feels like it matters. The MC is OP compared to everyone else, and the antagonists are weak and uncompelling.

The worst part is the slavery. I enjoy when stories have stuff like slavery in it, ...

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