I could tell this was a groomer manga from the first couple of pages of the older woman encouraging the young boy to like girly things. romanticising classic groomer pdf-file behaviour
Whoa, author is pretty bold to publish this story. And it's quite well-done, it isn't selling itself just on being taboo. It's very uncomfortable to read and you can sense the creepiness coming for a while, but I guess this is the point.