Saijaku Tamer wa Gomi Hiroi no Tabi wo Hajimemashita.

Two isekai fantasies where the child-aged MC's tame a slime who become their partners for the majority of the stories They meet a variety of different people solving cases that happen whilst becoming well liked with the people they trust Saijaku Tamer does have a more serious story compared to Kamihiro but their journeys are touching to the heart and makes you want to support the two MC's 

Two reincarnation isekai anime with a cute female child protagonist who has a cute animal/monster companion. The way the two anime develop feels very similar, their setting is also alike, and anyone who likes cute stuff will surely find themselves very satisfied with both of these shows. 

Both are slower paced adventures involves a young traveler going to different fantastical towns with something to cap them from staying too long. Both Mcs also follow tragic backstories that caused them to depart that involves the residence of their respective hometowns exiling them. The places they travel to also had strangely similar names to each one.  

Both takes place in a fantasy world where the main character is a young girl who travels around visiting different sights. Both also have a traquil vibe to it. 

Both have traveling protagonists that are involved with people in a wholesome way. Both are: -chill pace -travelling protagonist -have good story (just look at the scores one these two) Mushishi is a bit better suited for a more mature audience. 

Cute small girl struggling at life in a Medieval Fantasy world receives better treatment and becomes wholesome. Emotional and Lovely! 

Both anime have a main character that is traveling from village to village, gaining more money, friends, and confidence on the way. Both have cute side characters you meet along the way. Both have some focus to show the main character doing what they can to survive at the beginning as they gain better equipment and companions that help them live more comfortably. "Campfire Cooking" is more mid-high fantasy than this series, but the magic system here seems interesting with innate skills that define your future occupation (think MLP:FIM, if you have seen it). While "Campfire Cooking" focuses on the ways Mukouda can use his skill to live life easy, Ivy has to work hard to survive and you really root for her each time she has a windfall. read more 

Both are about little girls with a past life knowledge. And both are very smart and know how to deal with situations 

MC hated by characters in introduction episodes because different with others. In introduction episode, they both looks like hopeless and lonely. MC never give up, stay in positive, always embrace in smile. MC will meets new people and have many friends. MC don't want attract attention and didn't like being popular but inside their heart, they happy because not feeling lonely again.