I really dislike large age gaps like this, especially when the pairing is of an adult (or near adult) who took care of a child or young teen that has grown up. My dislike probably stems from personal experience, but this kind of pairing in a story feels icky and gross and could even be considered as “grooming.” The story was alright and art was good, just couldn’t get past the dynamic of the pairing.
Atotori Musuko wa Gaman shinai