The thing I found the most interesting with this manwha was, that instead of following one character and that persons view and life, in this you get to follow the lives of six different people. Some more then others but still all six of them. Myunga and Taek and their characters and relationship reminds me a bit of Seung-Hoo and Nan-Woo in You're so cool. But it's not something you get bothered by or anything. The story holds a lot of serious issues but can also get really funny and sometimes out right crazy. The story is not one of those who tends to spinout of control, it stays on track and that is one of the many great things about H2O.
The art is beautiful and I really enjoyed this serie, maybe the ending was a bit abrupt but since the serie was so good it's okay.
The name H2O can be a bit missleading and leave you to wonder what it has to do with the serie, but the reason for it is presented in the beginning, it's just that it rarely comes back to that explanation and one tend to forget it.
To sum it up, this serie is worth the read and defenitly something to check out.