
Quick answer — Ai Nonaka worked on Goku Sayonara Zetsubou Sensei (Theme Song Performance), Zan Sayonara Zetsubou Sensei Bangaichi (Theme Song Performance), Sayonara Zetsubou Sensei: Nyankin no Kirisuto (Theme Song Performance).
Ai Nonaka worked on Goku Sayonara Zetsubou Sensei (Theme Song Performance), Zan Sayonara Zetsubou Sensei Bangaichi (Theme Song Performance), Sayonara Zetsubou Sensei: Nyankin no Kirisuto (Theme Song Performance).