Ethics problems aside—too-damn-large age gaps in ch 1 (which I hadn't even looked at, because that's pretty obvious from the description) but also in ch 3; plus plenty of dubious-yaoi-consent issues—it's not badly written. Heck, it's actually pretty decently good writing, just a matter of "to what end" XD
Like it also has it's head pretty firmly in the gutter for a good chunk of it, as one does, and I think I may disagree with author a bit on what's in good taste beyond the strict ethicality issues, though that is what it is... Basically I guess I feel it's a "poor taste, good execution" sort of thing. Not, like, exceptionally poor taste (for the genre) nor is it extremely good writing, but enough to be noticeable on both counts. :/ Makes one feel wistful and slightly disgusted XD