I would first say that the main character is quite the pervert and isn't afraid to show it - but the manga doesn't particularly try to show boobs etc as often as possible unlike something like fairy tail. Still have a fair amount of it though.
Ok, now to the characters. Not particularly good but not really bad either. The main guy is interesting in his own right, but the main girl is quite boring in comparison. Well I hesitate to call her the main because she really isn't, we just see her first. But no matter. Anyway, she takes on the role of damsel in distress at the start, though her role becomes more of a side character later on alongside the other sides. That's fine actually, as I much prefer that she isn't forced into the MC role just because we saw her first. The side characters have their own quirks and have some likeable traits - they're good people and might grow on you as you read more. However, I didn't feel much emotional investment in the characters, but I'm interested to see what happens to them in the story and I also enjoy seeing them interact and go about their stuff.
About the story, I think the overall story is pretty interesting, as well as the way things are revealed. Honestly, there were many moments that got me thinking: ehh, you're really gonna do that? or omg so cliche. when something happens the way I expect it to/good characters act good as expected. You can totally feel the author not so subtly pouring on the badass character points, and I can't help but sigh and just enjoy it despite it's typicalness. I do quite like it though, despite all that.
Anyway, what really interests me enough is the overall story - which isn't really as straightforward as the simple events might play out. It surprises me sometimes, and I read all this way just to know what exactly was going on with the world/characters despite my lack of investment in the characters at the start. There's a lot of potential here, and things can actually get pretty dark and terrible. It's apparent from the first chapter that mysterious things are going on, but it didn't lure me in fully at the start. But it got more interesting as it progressed, and I got more invested and curious as I read on. When I came to the end of the latest chapter, I actually went "omg really?" because I was upset I couldn't continue. All in all I'll say it doesn't always succeed at making the little stories work - but when it start to tackle the big things everything start moving very amazingly and fast.
Overall, I'd say this manga has an interesting story behind it, though the typicalness of the plot at points might delude you into thinking it's just another boring story. I wouldn't say the execution is always good, and characters are interesting enough to fit their purpose of carrying the plot but I don't feel that hugely invested in them (I enjoy them and what they do but I don't love them). But the story might be pretty rewarding if you can skip over some rough patches, and I truly do want to know more about what is going to happen next. I think that's the most important factor. I'd also say the first few chapters are more like a prologue/background and things really start getting better after that.
Edit: 46 chapters in
It's sad to say, but the story really doesn't get better. It gets more complicated for sure, and tries to put in plot twists at every point that it kinda gets tiring to read. Think the later parts of Fairy tail, Shokugeki, Nanatsu no Taizai where a ton of gasp-omg-so-important-reveals-and-cool-stuff are happening but you're just like um okay... I don't even know what's going on now and don't care so just move along, please.
Plot twists are great when they make sense - keep trying to throw them for shock factor or to make things exciting and it backfires and makes one lose interest. Unfortunately, this is the case here and I'm not sure I'd recommend this anymore (even if I never really did in the first place). It's one of those stuff you'll continue to read for flashy effects and to see how it all ends up - I'm interested still in how it ends but maybe not the journey anymore, I'll rather read a summary on it on wikipedia/somewhere but it hasn't ended... and I'll probably stick with it to the end as a sense of obligation. If you're a masochist or just wants to switch of your brain and read a fast-paced, lots-of-stuff-happening-constantly story then maybe you'll want to read this.
