It's well-drawn and for an ecchi harem love comedy manga, it does exactly what you'd expect. It manages to stay, if not fresh, at least not overly repetitive in its fanservice and innuendo considering the limitations of shounen manga.
That being said, the MC is hard to really like. There are some harem stories where you actually appreciate that the guy is a decent person who's helpful, empathetic, and considerate - the kind of "boyfriend goal" guy about whom you could say 'yeah, this guy actually justifies all the attention women give him'. In some ways Yasuke is a deviation from that overworked 'nice guy' shounen MC trope, but I think it's the wrong kind of deviation.
Yasuke doesn't really have any redeeming qualities. He has no skills and hes's not particularly thoughtful. He's constantly misunderstanding women's feelings, hurting them with his actions, and really all he does proactively is seek out ways to peek on them.
In fact, his perverted nature is the only thing that's really said about him - the girls don't give any real indication of what they see in him otherwise.
Yet they always forgive him, he never really learns anything, and his complete incompetence somehow remains endearing as he's constantly doted on.
He ends up in the harem 'dream scenario' without really putting in any work whatsoever or growing up at all.
So it gets an 8 because it's not too bad, it's not rushed, and it's well-drawn and executed and, besides the shallowness of the characters, the writing is okay.