Ryouma Takebayashi dies in his sleep at the age of 39 after leading a life of misfortune. Taking pity on him, three deities offer him the chance to reincarnate in a world of magic where he has only one mission: to be himself and enjoy life. They bestow upon Ryouma powerful physical abilities as well as the affinity to master all elements, and promise to watch over him. His new life as a young child officially starts when he is teleported into a forest.

Three years go by. Having spent most of his time researching slimes, Ryouma has managed to evolve unique kinds of slimes, training an army of them while developing his magic abilities. Although the young boy is happy with his hermit existence and comfortable cave home, he somewhat misses the company of humans. But after healing an injured member of a passing group of travelers from a duke's household, Ryouma is persuaded to go with them and exit the forest accompanied by his menagerie of slimes. A whole new world awaits him, where his skills as a magic user and slime tamer continue to elicit surprise and admiration.

Type: TV
Episodes: Unknown
Status: Not yet aired
Aired: Oct 4, 2020 to ?
Premiered: Fall 2020
Broadcast: Sundays at 23:30 (JST)
Producers: Lantis, AMG MUSIC
Licensors: Funimation
Studios: Maho Film
Source: Light novel
Genres: Adventure, Slice of Life, Fantasy
Duration: Unknown
Rating: None

Director: Takeyuki Yanase (Uchi no Ko no Tame naraba, Ore wa Moshikashitara Maou mo Taoseru kamo Shirenai., Isekai wa Smartphone to Tomo ni.)
Series Composition: Kazuyuki Fudeyasu (Tensei shitara Slime Datta Ken, Isekai Maou to Shoukan Shoujo no Dorei Majutsu)
Character Design, Chief Animation Director: Kaho Deguchi (Uchi no Ko no Tame naraba, Ore wa Moshikashitara Maou mo Taoseru kamo Shirenai.)
Color Design: Aki Watanabe (Cutie Honey Universe)
Art Director: Satoshi Shibata (Black Bullet)
Director of Photography: Yukina Nomura (Youjo Senki Movie photography)
Music: Hiroaki Tsutsumi (Kujira no Kora wa Sajou ni Utau)
Sound Director: Masaki Tsuchiya (Isekai Shokudou)
Music Production: Lantis
Sound Production: AMG Studio

Ryouma: Azusa Tadokoro (Sin: Nanatsu no Taizai)
Eliaria Jamil: Kuwahara Yuuki (Kobayashi-san Chi no Maid Dragon)
Reinhart Jamil: Daisuke Ono (Somali to Mori no Kamisama)
Miya: Marika Kouno (Isekai wa Smartphone to Tomo ni.)
Gain: Motomu Kiyokawa (Gochuumon wa Usagi Desu ka?)
Lulutia: Kikuko Inoue (Aa! Megami-sama!)
Kufo: Koichi Makoto (Ishuzoku Reviewers)
Ryoma Takebayashi: Hiroki Yasumoto (Hoozuki no Reitetsu)
Tabuchi: Makoto Furukawa (Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen)