
Quick answer — Buono! worked on Shugo Chara!! Doki (Theme Song Performance), Shugo Chara! (Theme Song Performance), Shugo Chara! Party! (Theme Song Performance).
Buono! worked on Shugo Chara!! Doki (Theme Song Performance), Shugo Chara! (Theme Song Performance), Shugo Chara! Party! (Theme Song Performance).