Anime Similar to How Not to Summon a Demon Lord

The original Demon King reincarnates 2,000 years later, only to find the world has become weak and his legacy has been falsified. He enters an academy to reclaim his throne.

Why it's similar: Anos Voldigoad shares Diablo’s absolute confidence and ability to shrug off legendary attacks like they are nothing. Both shows focus on the satisfaction of an OP character crushing arrogant opponents.

Power comparison: While Diablo uses game stats, Anos uses conceptual magic that defies logic, though the result of total domination remains identical.

Why watch after How Not to Summon a Demon Lord: This is for fans who loved the 'flexing' moments where Diablo proves he is on a completely different level than his enemies.

→ See anime similar to The Misfit of Demon King Academy

A man is stabbed and reborn in a fantasy world as a slime with the ability to devour and mimic anything. He eventually builds a nation for monsters.

Why it's similar: Both stories focus on a protagonist gathering a harem of different fantasy races like elves and cat-girls while building a base of operations. The progression from a lone player to a leader is a shared core arc.

Power comparison: Rimuru scales up through consumption and naming monsters, whereas Diablo starts at his peak power level from the beginning.

Why watch after How Not to Summon a Demon Lord: If you liked the world-building aspects and Diablo’s interactions with Rem and Shera, Rimuru’s journey offers a more expansive version of that fantasy.

→ See anime similar to That Time I Got Reincarnated as a Slime

Arc wakes up in the body of his skeletal game character. Despite his frightening appearance, he decides to become a mercenary and protect the innocent.

Why it's similar: Like Diablo, Arc is a gamer transported into his MMO avatar who finds himself way more powerful than the locals. Both characters try to navigate their new reality while hiding their identity.

Power comparison: Both characters use high-level RPG class skills and magic that are considered 'mythical' by the residents of the new world.

Why watch after How Not to Summon a Demon Lord: This is perfect if you want the MMORPG vibe and OP action without the heavy focus on social anxiety monologues.

→ See anime similar to Skeleton Knight in Another World

Issei Hyoudou is killed on his first date and revived as a devil. He joins a club of high-ranking devils and aims to become the Harem King.

Why it's similar: If you are here for the ecchi elements and the harem building, this is a staple choice. It blends high-stakes supernatural battles with heavy fan service and a protagonist surrounded by powerful women.

Power comparison: The power system is based on Sacred Gears and demonic rankings, which mirrors the 'leveling up' feel of Diablo’s progression.

Why watch after How Not to Summon a Demon Lord: Choose this if the fanservice and the dynamic between Diablo and his summons were your favorite parts of the show.

→ See anime similar to High School DxD