
Quick answer — Kouji Wada worked on Digimon Adventure: Last Evolution Kizuna (Theme Song Performance), Digimon: Digital Monsters 02 (Theme Song Performance), Digimon Frontier (Theme Song Performance) and 3 more anime.
Kouji Wada worked on Digimon Adventure: Last Evolution Kizuna (Theme Song Performance), Digimon: Digital Monsters 02 (Theme Song Performance), Digimon Frontier (Theme Song Performance), Digimon Data Squad (Theme Song Performance), Digimon Xros Wars: The Evil Death Generals and the Seven Kingdoms (Insert Song Performance), Digimon Xros Wars: The Young Hunters Who Leapt Through Time (Insert Song Performance).