mira, sasara and sena!
also non-anime roles: amane, melodiana and rinchuu :3
Cinque from Dog days and Light from Death Note...damn, he pulled off both of these two very different characters really well, Light in particular. His role as Okabe and Kei is also amazing. Also, he sung the ED of Ajin? Damn, it was pretty awesome.
Christmas no Mahou is soooooo sweet and nice .......><
I think my favorite Nakamura roles are both Hazama and Terumi Yuuki, especially due to their crazy personalities and those insane laughs.