
Quick answer — Yoshimi Nakajima worked on K-ON! Season 2 (Assistance), K-ON! (Assistance), The Pet Girl of Sakurasou (Assistance) and 4 more anime.
Yoshimi Nakajima worked on K-ON! Season 2 (Assistance), K-ON! (Assistance), The Pet Girl of Sakurasou (Assistance), K-ON!: Live House! (Assistance), Sound! Euphonium: The Movie - Our Promise: A Brand New Day (Assistance), Yozakura Quartet: Hana no Uta (Assistance), Okami-san and Her Seven Companions (Assistance).