
Quick answer — Nobuhiko Okamoto worked on Assassination Classroom Second Season (Theme Song Performance), Place to Place (Theme Song Performance), Vatican Miracle Examiner (Theme Song Performance) and 2 more anime.
Nobuhiko Okamoto worked on Assassination Classroom Second Season (Theme Song Performance), Place to Place (Theme Song Performance), Vatican Miracle Examiner (Theme Song Performance), Brothers Conflict (Theme Song Performance), World War Blue (Theme Song Performance).