Kimi no Koe wo Todoketai

They present ideas of how the words of people affects others, Anthem presents how one can harm people through their words while Your Voice shows it in a more positive light.  

both are about the main character's relationship with their mothers the friendship between main girls is also formed on the go both have chill CGDCT feel 

In these shows, the main character shares an important life lesson they learned from their parents or grandparents in the form of a supernatural symbol with other characters and the audience. They are both relaxing, optimistic slice of life shows that feature more character development than eventful storylines. 

The main characters of both animes for the first time try themselves as the narrators on radio station.