Tensei Shitara Slime Datta Ken Review

Really a slime?



Tensei Shitara Slime Datta Ken is a Japanese fantasy series that follows the adventures of a man who is reincarnated as a slime monster in another world.

A 37-year-old office worker dies and wakes up as a slime named Rimuru in a fantasy world. He gains various abilities and allies as he explores his new environment and builds a peaceful nation for monsters.


Tensei Shitara Slime Datta Ken

It is a fun and enjoyable series that has a lot of potential and creativity.

Pros Cons
➕ Main character ➖ Tension
➕ Lore ➖ Clichés
➕ Pace ➖ Details
➕ Art
➕ Message


The lore of Tensei Shitara Slime Datta Ken is the background and history of the world and its inhabitants. It includes:

  • The origin of the world and its creation by Veldanava, the Supreme God
  • The existence of various races and factions, such as humans, monsters, spirits, dragons, angels, demons, etc.
  • The concept of magicules and skills that govern the power system
  • The role of Rimuru as a reincarnated being who can influence the world with his will
  • The conflict between different forces and interests that shape the events of the story


The plot revolves around Rimuru’s interactions with different races and factions in the world, such as humans, dwarves, goblins, ogres, dragons, demons, angels, etc. He faces various threats and challenges that test his leadership and morality. He also learns more about his own origins and destiny as a slime.

The main characters

  • Rimuru Tempest. He is a slime who can mimic any form and absorb any skill. He is kind, smart, and charismatic. He leads a nation of monsters and strives for peace and prosperity in the world.
  • Veldora Tempest: A powerful storm dragon who befriends Rimuru and grants him his name.
  • Shizue Izawa: A Japanese woman who was summoned to this world as a child and became a hero known as Shizu. She passes on her human appearance to Rimuru before dying.
  • Ranga: A tempest wolf who becomes Rimuru’s loyal companion and mount.
  • Benimaru: The leader of the ogres who joins Rimuru’s nation after being saved by him. He is a skilled warrior and strategist.
  • Milim Nava: One of the demon lords who rules over part of the world. She is childish and playful but also extremely strong and destructive.
  • Diablo: A primordial demon who serves Rimuru as his secretary. He is cunning and loyal but also ruthless and sadistic.


The series is appealing for its humor, action, world-building, character development, and fan service. It has a balance of comedy and drama that keeps the story engaging. It also has a diverse cast of characters with different personalities and backgrounds that make them interesting.

➕ Its unique premise of having a slime as the protagonist

➕ Its creative use of skills and magic systems

➕ Its positive message of coexistence and harmony among different races

➕ Its satisfying progression of power levels

➕ Its colorful art style

➖ Its lack of tension or stakes at times due to Rimuru’s overpoweredness

➖ Its tendency to gloss over some details or events

➖ Its occasional use of clichés or tropes

Final thoughts

My final thoughts on Tensei Shitara Slime Datta Ken are that it is a fun and enjoyable series that has a lot of potential and creativity. It is not perfect, but it is entertaining and satisfying. I would recommend it to anyone who likes fantasy, comedy, action, and isekai genres.