This manga is super great. Without a doubt it becomes my 3 top manga (at least for a long long time). I don't dislike Shakugan no Shana and Zero no Tsukaima (I like both anime actually). but for those who compared Tena on S-String with Shana and or Zero, please open your eyes. I don't really think Shana really that 'lolicon'. The same case with this manga. Yes, we can say the main heroine is a loli, but don't say the manga itself is loli. If it's about 'lolicon', imho Zero no Tsukaima is the closest to it between the three.
For whoever disliking this manga for the 'wrong reason', open you heart and try to read to at the very least the end of volume 5. You'll see the story makes sense, actually simple yet complex, actually complex yet simple, The story is progressing at a fine pace. You might think it's more of a gag manga than music / romance manga at certain early point. And you might think the story wouldn't be that much. But the story keep on progressing. Make 100 prediction about the story, and I'm sure you wouldn't get any one right It could turn serious. It could give you a sad feeling. .
Tena is rude, violent, greedy (of self glory - but changed with the flow of story), and dishonest. But still she is one interesting character. I'll clarify this first: I'm NOT a lolicon! Even still, I think she is interesting.
Kyousuke is not smart, not handsome, not really talented (though having a very very special 'note' within him). Clueless about girls' feelings toward him (though he wanted a girlfriend), like you can find in so many other main male leads. Nothing much different from your 'typical' main male leads, really. But even so, he is interesting.
My English is not that good and I'm not really good at conveying my thought into words. But even so, try to read it for it's story, it's artwork, it's characters, and all. Don't always judge the book by the cover (aka main heroine loli). You might miss a pretty, rare, good manga, you know...