Kami-tachi ni Hirowareta Otoko

The slime creature is often an overlooked creature in the fantasy genre, often treated as worthless and pointless, simply a low-level monster that adventurers use to level up on, and yet both of these series dives into the idea that slimes aren't such a useless creature after all. Both series are also focused on the building of platonic relationships and have a definite heartwarming overall tone to the series. The moments are slice-of-life rather than combat driven, yet the relationships the main character forms are the real driving force behind both series. 

Same process of two characters isekai'd from overworking and are overpowered in the isekai. Their powers are used to benefit others as they meet different people along the way that changes their lives to make it more exciting. Both rather fun and relaxing to watch with a bit of action added too at times. Main difference is one kills slimes and the other nurtures slimes. 

Both are very "feel-good" animes. Although these two shows are similar, but "Slime Taoshite 300-nen,--" is superior in all terms (except maybe visuals) when compared to "Kami-tachi ni Hirowareta Otoko" If you like the light hearted, slice of life -ish type of isekai(/fantasy), you're going to like "Slime Taoshite 300-nen,--" 

-MC is related to same way with slime. -Both anime are laid back and lighthearted. -Both MC have very high stats or powers. -Both MC died due to over working. 

Both MC died due to overworking. Both MC wished to have a more relaxed/laid-back 2nd life. Both MCs live alone for an extended period of time. Both MCs are extremely kind and wholesome. Both are SoL Isekai anime, with a relatively relaxing and wholesome atmosphere. There is not a lot of combat for both Anime.  

Both are wholesome Isekai focusing on helping others with their unique powers. 

Main character gets isekai'ed and decides to open a business thanks to their knowledge of their old world In Kuma Kuma Kuma Bear, the MC opens a restaurant In By the grace of the gods, the MC opens a laundry (but also brings quite a lot of recipes as well) 

Both feature cute, selfless main protagonist that become adventurers and help people out. One opens a restaurant (Kuma Bear) and one opens a laundromat. 

Both are Slice of Life Isekai with little to no action scenes, both are relaxing and wholesome isekai. 

So, two isekai anime, which show two similar worlds: with fantasy locations and middle age vibes. The protagonists are adults, living miserable lives, who suddenly die and wake up into this new reality, in a child's body. They manage to keep the knowledge of their past life, which is ahead of this new world, and for this, they are considered as geniuses in their operation fields. Both anime follow a child's journey through a second youth, between joy and despair, which will eventually lead them to their dreams. 

Both Ryouma and Myne is similar in the following ways: Both reincarnated into a child's body after an unfortunate accident. Both use their knowledge from their previous life and introduce it to their new world. Both are extremely smart (especially for their age). Both cared about the people around them. Both introduce new technology/idea that is unheard of in the new world.  

- slime - another world - strong MC 

- Slimes. A lot of them. - Isekai - Slice of life feeling for both of them, though in That Time I Got Reincarnated as a Slime not as much - MC has to fight monsters, though only occasionally - Mc is constantly trying to evolve when it comes to their shop/town  

both have similar vibes when watching. kami-tachi leans more towards the wholesome-adventure SoL side, while, tensei is more shounen oriented with greater acion. Both animes have OP MC's who get isakai-ed. If you enjoyed kami-tachi, you may possibly like tensei; there are times where tensai will have a similar relaxed vibe that kami-tachi has throught. 

Both are isekai animes where a person who dies in the real world get a new life in another world, as a child, where they're able to apply the skills from their first life, which includes both creating things and starting a business. 

Both MCs die from overworking and are transported into another world in a child's body. With their knowledge from their original world, they use that knowledge to improve the lives of others surrounding them.  

Both are isekai anime featuring mc who is talented in magic and fighting, yet lacking in common sense. 

Fantasy,Isekai, 

If you're a fan on 'By the Grace of the Gods', then you'll definitely enjoy 'The Weakest Tamer' Both shows have a similar vibe, very cozy and wholesome. Both main characters are young kids who have been isekaid to a magical world where they have become tamers. They both tame slimes who grow to get abilities. The weakest tamer seems to have a bit of a more tragic start but it's still pretty wholesome <3  

Both features MC (Ryouma and Mathias) who get reincarnated into a child's body while retaining memory from their previous life. Ryouma and Mathias use their knowledge from their previous life to develop new technology and improve the lives of others around them. Ryouma and Mathias are considered gifted for their age. There is some difference between these 2 anime: 1. Weakest Crest is an adventure isekai where it features combat and death while Grace of God leans towards Slice of Life. 2. Even though both features combat. Weakest Crest features significantly more combat than Grace of God 3. Ryouma and Mathias use their knowledge in a different way. Ryouma uses his knowledge to open a shop while introducing modern technology. While Mathias uses his knowledge of magic to enhance his party mate's magic.  read more 

- both animes have a grown man getting isekai'd and reincarnating as a adolescent - both have comedy - both have fanservice - harem 

both are anime center around a iskeai MC that use slime that are very unusual and overpowered. both MC try and keep a low profile by the grace of the gods is more slice of life with the MC settling down in a town and opening a laundromat while my isekai life is more of a hero adventure going form one trouble town to another saving it them leaving  

MC's pass away and are isekai'd as a kid. They are both favorable to the god's and so have gained high status effects from them making them super powerful in the isekai. They are also quite liked by the people around them. Both shows are relatively peaceful with action scenes every so often, but are shows that are supposed to be just a fun time to be had. 

- light slice of life anime - op mc - great friendship