Shun Oguri
Otsuka released her first single after "Ai am Best", "Peach/Heart" on July 25, 2007. The first A-side "Peach" is an up-beat summer song and was used as the end theme for the summer drama "Hanazakari no Kimitachi E" (starring Maki Horikita and Shun Oguri), while the second "Heart" is a mid-tempo track. The single also includes a rearranged version of "Renai Shashin", titled .