In the same year, she played the lead character who has multiple personality disorder in the suspense movie Tokyo Shōnen and reprised her role as a student apprentice in Always: Zoku Sanchome no Yuhi, the sequel to her breakthrough movie.Horikita's exceptional work was recognized by Vogue Nippon which identified her as one of the eleven Women of the Yearin 2007.
Sakurai has boldly attended several Johnny’s events accompanied by Horikita, unabashedly introducing her as his girlfriend.Looking over them from a distant was Kenichi-san, it's like he was their guardian."Sakurai and Horikita are around the same age, enthusiastic about their jobs and also serious, perhaps these factors make them understand each other well. , Horikita said "Keeping in mind that we're rivals at loggerheads, I always try to hate him even when there's no filming." Sakurai countered this, replying, "That doesn't happen at all, the smiles actually never stop!"Of course, Johnny's are fussy about relationships.In 2008, Nihon Monitor recognized Horikita as one of Japan's top endorsers during its annual Most Popular Personality in TV CMs.Horikita had been casted in several drama series and movies since 2003 but her roles in Densha Otoko and Nobuta wo Produce became her breakthrough performances.