
Quick answer — Na-Ga worked on Little Busters! Refrain (Original Character Design), Angel Beats! (Original Character Design), Charlotte (Original Character Design) and 11 more anime.
Na-Ga worked on Little Busters! Refrain (Original Character Design), Angel Beats! (Original Character Design), Charlotte (Original Character Design), Little Busters!: EX (Original Character Design), Charlotte: Strong People (Original Character Design), Angel Beats! Specials (Original Character Design), Little Busters! (Original Character Design), Summer Pockets (Original Character Design) and 6 more.