How Not to Summon a Demon Lord (2018)
Kernel Score: 84% · 337 ratings
Genres: Action & Adventure, Comedy, Sci-Fi & Fantasy, Animation
First aired: 2018-07-05
Seasons: 2 · 22 episodes
Where to watch How Not to Summon a Demon Lord
- Stream: Crunchyroll
- Buy: Prime Video, Apple TV
US availability, updated 2026-10-22.
Overview
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.
How Not to Summon a Demon Lord parents' guide: ages 15+
Parents need to know that How Not to Summon a Demon Lord is a fan-service-heavy isekai anime with sexualized content.
- Sex, romance & nudity: Strong — Contains harem and ecchi elements including sexualized 'slave' dynamics between characters, consistent with its TV-MA rating.
Fresh Kernels AI-assessed from the official TV-MA rating, publicly documented content. A guide for families, not an official rating.
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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)
How Not to Summon a Demon Lord FAQ
Is How Not to Summon a Demon Lord good?
How Not to Summon a Demon Lord has an 84% Kernel Score on Fresh Kernels from 337 audience ratings.
Where can I watch How Not to Summon a Demon Lord?
In the US you can stream How Not to Summon a Demon Lord on Crunchyroll and buy it from Prime Video and Apple TV.
Is How Not to Summon a Demon Lord OK for kids?
How Not to Summon a Demon Lord is rated TV-MA. Fresh Kernels suggests ages 15+. Parents need to know that How Not to Summon a Demon Lord is a fan-service-heavy isekai anime with sexualized content.
What shows are like How Not to Summon a Demon Lord?
If you liked How Not to Summon a Demon Lord, try Full Dive: This Ultimate Next-Gen Full Dive RPG Is Even Shittier Than Real Life!, The Testament of Sister New Devil, Death March to the Parallel World Rhapsody and TSUKIMICHI -Moonlit Fantasy-.