So you have the basic hero Bell who wants to get stronger (and meet lots of girls in the process.) If you watched the first episode of the anime you know he has that "special skill", he isnt ever told of this but his stats grow pretty dam high. The godess feels useless of course so she goes and begs to her friend to get another dagger and wants to give it to bell. In the meantime Bell is grinding and flirting with a bunch of babes, although we dont see much of the blondie. Sort of like Log Horizon or SAO, plots.
To put it in a few words, girls start to fall for him and he gets incredibly strong then fights a giant leopard thing and kills it in one hit.

I dont know how you guys will critique it or how it will differ in the anime; Volume 2 is coming out in 18 days so when that comes out ill post another update.

Id give it an overall 6/10 Just because its sort of a repetitive theme we see often (even voiced by kirko's voice actor) and the character development is eh you dont see to much of it.

Here is a picture of the final page in the book giving an overall stat growth:
http://i.imgur.com/jCXzS83.png

Once you make a decision, does the universe conspire to make it happen? Is destiny a matter of chance, a matter of choice or the complex outcome of thousands of warring strands of fate? All twins Kanba and Shoma know is that when their terminally ill sister Himari collapses at the aquarium, her death is somehow temporarily reversed by the penguin hat that she had asked for. It's a provisional resurrection, however, and it comes at a price: to keep Himari alive they need to find the mysterious Penguin Drum. In order to do that, they must first find the links to a complex interlocking chain of riddles that has wrapped around their entire existence, and unravel the knots that tie them to mystifying diary and a baffling string of strangers and semi-acquaintances who all have their own secrets, agendas and "survival strategies." And in order for Himari to live, someone else's chosen destiny will have to change. It's a story of love, fate, life, death... and Penguins!