It is of course a great read. The art is superb. The battle scene have nothing to be complained about. The plot is indeed doesn't lack anything in it. But, for me who enjoy reading the original manga version. This story is easier to write. The original besting this in the larger story building scale. This story have a problem in age of the characters and the gym system in it. Maybe it is just because this is the author's intention to be different, to be different can be better though. But, if this is going to be running in longer time, this gonna be a problem (because it can make a ruin in the reader's who completely understand pokemon world), hard to predict.
The anime is mediocre in all of way. Because it's for kids probably. There is a better version but it just produced in some story clip. Just like this doujinshi. It have different area to compared.
I hope the artist make a joint production with the original in the future. It can be booming and make the anime producer convinced to produce a better approach in their products.