(Review for all 3 first volumes.)
I do not like isekai as a genre and never will. This however seems like a whole other beast entirely, at least in my feelings it registered as such. It has a huge heart that I did not expect to find here. The story of Mary, Blood and Gus and how they raised Will as their son, all the thing they lost because they died, brings tears to my eyes every time I remember. Will just has this knidness and compasion that I really liked to see in Kimetsu no Yaiba with Tanjiro. I will be looking forward to the next volumes.