I like hentai if one of these conditions are met:
1) Has a good plot
2) Has a good "plot"
Now, this has an unoriginal story and a so-so art... For me it's a 4.
love this comic, the female butthole, which is what I like the most, is not censored, so it works great for me. Wish it had a different art style though, but still good
Basically a slightly better version of that other work in what the overall flow is, but that ending wasn't great... Extra chapter only moderately helps it