Ho Yay: Charmander and Eevee. Squirtle also has a canon crush on Almond.
Periphery Demographic: The manga had a sizable number of male fans, presumably because they only picked it up for having Pikachu on the cover, unaware that it was specifically meant for girls.
So Okay, It's Average: The Chamo-Chamo Pretty sequel can be viewed as a very loose adaptation of Pokémon Ruby and Sapphire games. Haruka, the main character of this arc, was affectionately based on May, either from the games or even anime. Otherwise, the storyline was pretty much different from the games.