Watashi, MAKENAI!

Currently addicted to this Pokemon (Yes, Pokemon) ending song sung by KAORI, who is Haruka's (May) seiyuu! It's an upbeat and cute song, and I really like it for some reason! KAORI awesome sang Tears Infection, the opening of Myself; Yourself. She's pretty talented! The above video is the ending from the anime itself, below would be the full song.