A lot of manga have eyeless males nowadays, because that'd makes it easier for the reader to 'self-insert' into the male character, and feel the pleasure of having big booba bazongas bounce off their bodies or something.
In this one the mother has no eyes, so then I have an easier time imagining these two adorable kids as my kids, and I want to see them happy.
also i'd give all my savings to see them get married