This is the story of how a nagging mother gets turned on by her son... It's a story where the mother's hidden carnal desires gradually break free and once unleashed, those desires prove utterly overwhelming...
There's a bit reusing of art* reminiscent of a CG set which is whatever and it's a bit inconsistent with the first person POV which I find unfortunate but man, love the art style! Reminds me of my hero academia at quite a few points