Ikki Tousen asks a question of its viewers

YES
So, I’m a weak ass who couldn’t manage to finish blogging a couple shows before they ended, but I watched them, and if I didn’t finish blogging it’s probably because I lost all interest in even hating on something. Spice and Wolf disappointed in the end for sure, but having had no expectations for H2O from minute one, I suppose I wasn’t let down.
That said, I did watch it, which reminds me of something a teacher in art school said once: if you go to a restaurant and they serve you a shit sandwich, you don’t have to eat it.

Screengrabs are all from the final episode, just to make things look more exciting.
Is there a plot? Like a plague of rats, the Visual Novel has descended upon everything, devouring real storytelling in favor of individual mini-arcs devoted to different girls. In H2O, Hirose Takuma is a middle school kid who moves out to the country with his Uncle Dragonball to recover from a bizarre disease that made him blind. If your bets were on “tragic incident in past, repressed” then either you wrote this show or you possess (at least) average intelligence.

Takuma meets a cavalcade of girls, like I’m-Not-Me, Platform Shoes, and Cross-Dress, but enters into a pseudo-relationship with village outcast Hayami, who lives in an abandoned train car in the woods and is inexplicably treated like Gojira with bad breath by the redneck townies.

Gradually the past of the village is discovered, and is of course inextricably linked to Takuma’s own recent but hazy past. And if you’re like me, you don’t care.
I suppose I’d call it “capable,” but the character designs were not at all appealing to me. The show was produced by ZEXCS, who have only a little work out there, none of which I’m familiar with.

Forgettable incidentals, straight-up unenjoyable OP. I fast forwarded through it every time.
Let’s keep it simple, stupid: I pretty much hated this show.