
Quick answer — Larval Stage Planning worked on Baka and Test - Summon the Beasts 2 (Theme Song Performance), High School DxD (Theme Song Performance), High School DxD OVA (Theme Song Performance).
Larval Stage Planning worked on Baka and Test - Summon the Beasts 2 (Theme Song Performance), High School DxD (Theme Song Performance), High School DxD OVA (Theme Song Performance).