Is this picture/these characters from any anime???

OMG it's a Fanart of La Corda D'Oro Premo Paso!
The Red Haired Girl's name is Kohoko Hino/Hino Kohoko and the Blonde Boy's name is Keichi/Teichi 또는 SOmethin'....I forget which one LOL Anyways those 2 are'nt really couples :P well I know they make a good one XD

Yeah, it's La Corda 'D Oro Primo Passo. It's Kahoko and Shimizu-senpai